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“Best of the Best” Boxwood Cultivars Manual

                May 2001 , 3rd  Edition

This Manual is Only a Guide

  This boxwood manual is written as a guide to boxwood selection.  It is based on the author’s 50 years of observations and work with boxwood.  This is one man’s opinion.    I welcome the readers’ observations and comments on adaptability in their environment so that in future editions I can be even more accurate in my evaluations. I strongly urge and recommend that the reader, in making decisions on cultivar selection and culture, consult local experts for their opinions as well, due to differences in locale and exposure. 

 I hope this manual will act as somewhat of a “compass” to help others in growing

Boxwood.   They have been a joy for me!  

Paul Saunders                                                                                                                           

Contents 

Introduction 

Preface                                                                                                                

Chapter 1      The History of Saunders Brothers Boxwood Nursery 

Chapter 2       Two Maxims for Boxwood Success                                                

                    In Horticulture--Variety is Everything--Almost!                                         In Boxwood---Protection  is Everything--Almost                                          

                            Bark Splitting                                                               

                            Varying Microenvironments on the Homesite           

                            Use Trees for Protection                                              

                             Northern Exposures are Usually by Far the Best

  The Benchmark Cultivars

 

Chapter 3     Upright  Cultivars                                 

                                  B. sempervirens  ‘Dee Runk’

                                  B. sempervirens  ‘Fastigiata’

                                  B. sempervirens  ‘Graham Blandy’

                                  B. microphylla    ‘John Baldwin’

 

Chapter 4     Very Dwarf Cultivars                                

                                  B. microphylla ‘Grace Hendrick Phillips’

                                  B. microphylla ‘Green Pillow’

                                  B. microphylla variety japonica ‘Morris Dwarf’

                                  B. mircophylla variety japonica ‘Morris Midget’

 

Chapter 5   Slightly Dwarf to Medium Size Cultivars

                                   B. sinica variety  insularis ‘Nana’

                                   B. sempervirens ‘Jensen’

                                   B. sinica variety insularis ‘Justin Brouwers’

                                   B. sempervirens ‘Suffruticosa’  (English)

 

Chapter 6  Sheridan Cultivars

                                   B. x ‘Green Mound’

                                   B. x ‘Green Mountain’

                                   B. x. ‘Green Velvet’ 

 

Chapter 7  Medium Size Cultivars

                                  B. sempervirens ‘Elegantissima’

                                  B. ‘Glencoe’--- Chicagoland Green

                                  B. microphylla variety japonica ‘Green Beauty’

                                  B. microphylla ‘Jim’s Tru Spreader’

                                   B. sempervirens ‘Vardar Valley’

                                   B. sinica variety insularis ‘Wintergreen’ (Big Leaf)

                                   B. sinica variety insularis  ‘Wintergreen’ (Little Leaf)                                

 

 

Chapter 8    Large Cultivars

                                   B. sempervirens (Common or American)

                                   B. sempervirens ‘Elizabeth H. Inglis’

 

Chapter 9    Other Cultivars                                       

                                    B. sempervirens ‘Asheville’

                                    B. sempervirens ‘Aureo-variegata’

                                    B. sempervirens ‘Newport Blue’

                                    B. sempervirens ‘Natchez’

                                    B. sempervirens ‘Pyramidalis’

                                    B. sempervirens ‘Pyramidalis Hardwickensis’

                                    B. sempervirens ‘Rotundifolia’

                                    B. microphylla var. japonica

 

Chapter 10 Boxwood Testing

 

Chapter 11 Acknowledgments

 

 

Preface

 

This “Best of the Best” Boxwood Cultivars Manual, May 2001 , 3rd  Edition, again contains my perceptions about the best cultivars of boxwood. This is the opinion of one man who has been involved with boxwood for more than 50 years, who has traveled thousands of miles visiting boxwood sites, seen hundreds of thousands of boxwood grown, and has talked to countless people about their observations. I will discuss my very strong beliefs on protection and further discuss the two main criteria that I believe one should use in judging boxwood:  Is the plant “Grower Friendly” and does it have “Impulse Cosmetics”?

 I began growing boxwood 54 years ago as a young boy.  I would not call myself an expert on boxwood, although over the years, I have been continuously growing them.   Now it is one of the key plants grown in our family nursery.  Although we grow many different species of plants, I still spend much of my time working with the boxwood nursery here, collecting boxwood test data, and visiting boxwood plantings and trials from the Atlantic seacoast to the Mississippi River.

 Although I will try to give evaluations of cultivars that I have seen growing in other areas, most of this information is about boxwood grown here in the Mid-Atlantic States.  We grow most of these plants commercially at Saunders Brothers’ Nursery.  In the following pages I have tried to give my frank opinions, as well as the opinions of others with whom I work and of others who are intimately working with boxwood--- expressing the good and the bad about various cultivars.

I have categorized the plants according to growth habits and uses.  Boxwood has become much more popular over the past several years. Landscapers have many choices as to suitability among the many different cultivars and their distinctive growth characteristics. Very rarely do deer forage on boxwood.  I have seen only one case in 54 years of growing boxwood where deer nibbled on it.  That was on a single plant.

 There is no perfect plant, yet some are more suitable than others.  There are over 100, maybe 200, and possibly even 600 different cultivars. With this tremendous number, it can often become “mind boggling” trying to figure out which one is best.  Many have small, almost imperceptible differences.  In this manual we have selected what we think is a cross section of the best.  Hence the name, “The Best of the Best.” In future years, because of testing and observations of these plants in the landscape, these evaluations will probably change, ever so little in some cases, and in others the evaluations will change radically.  This subject will be addressed in future manuals. 

I am a bit partial to boxwood for it is very much a part of our lives-- because this is where our nursery began many years ago.  Come to see us and we can talk-- Boxwood!

   Chapter 1

   

The History of Saunders Brothers  Boxwood Nursery

  To better understand my involvement with boxwood, I will tell the story of our boxwood nursery.  I propagated my first boxwood in the spring of 1947. A multi-talented science teacher and my mother showed me how to make cuttings for propagation.  Completely intrigued, I chose as my propagation site the north side of a red clay piney-thicket hillside.  An 11-year-old friend helped me with the project, and we stretched a rusty strand of barbed wire around our treasures to keep out the cattle.  We stuck 77 slips into the red earth, which was cooled by its northern exposure, while the pines kept off the hot sun.  We watered them every few days from the little spring branch that was at the bottom of the hill.  From this almost “impossibly primitive” beginning some 25 of the little plants rooted. 

I was truly excited and at the age of 13 years, I bought out my partner. 

My father recognized my interest and he fenced off a corner of the barn lot for my nursery near an old woodpile.  The manure, which had accumulated for years in the old milk cow lot, plus the organic matter from the woodpile, provided a nearly ideal environment for my venture. Participation in 4-H, with this as a project, further encouraged me. 

See Photo --- County farm agent, Mr. John Whitehead, and I and my boxwood venture-- about 1952.  

See Photo --- Boxwood nursery in the corner of the old barn lot about 1952.  

Then came college and the Army. Yet I continued propagation of boxwood.   I married a farm girl who helped me propagate more plants.  Then the magic:   People wanted to buy them! 

This boxwood money helped pay for my wife’s engagement ring and my first Ford car.  Then I made an observation—people were beginning to grow plants in containers.  Since I was still very busy surveying in order to make enough money to feed a house full of boys, my wife helped out by driving around to the county schools and the local pie factory, picking up gallon tins that had been discarded. Boxwood were planted in the fertile river bottom land on the farm, and thanks to the tins she collected in that little pickup truck full of children, one small container nursery was established on the riverbank and another in a grove of pines. 

See Photo --- Photo in 1965 of five of the little sons who rode around in the pickup with my wife as she picked up tin cans for us to grow boxwood.  

Then on August 20, 1969, along came Hurricane Camille.  Over twenty inches of rain were dumped on our countryside in one horrible night of destruction and loss of life.  Almost all of our 10 acres of plants on the river bottom were destroyed along with the little container nursery on the riverbank. In another container operation a few plants, which we had placed near the water reservoir of an old orchard water source in the grove of pines, did survive. With this as a nucleus, the container nursery expanded.   Our customers wanted our boxwood in plastic containers so we changed to suit their needs. 

Time passed and the seven sons went away to college.  Then, one by one, several of them came home to the farm---Tom came home with his bride, Lyn, both of them horticulturists, to work in the nursery.  Bennett came to take over the peach orchards, most of which he converted into more productive apple orchards.  Robert, too, was “bitten” at a plant show and came home to help us with our construction program of new plastic houses, then later became our salesman.  Next was Jim, who first became a County Agent, then turned homeward to help with our cattle and, as our operation expanded, to take over personnel duties. Along the way, Frank, a French-Canadian by birth and a master mechanic, became another member of our family team. 

There are others who have joined our Saunders Bros. team over the years to help make us what we are today.   Leonard and Charlie Earl have helped us for nearly a lifetime—and Terry, Maybelle, Lora, and Sarah for many years—as well as many others who have become a part of the story here.  Not to be excluded is our wonderful Mexican work force that is an integral part of our operation. 

See Photo --- Part of the crew at Saunders Brothers today.  Left to right,  “Canadian” son, Frank;  son, Robert, wife, Tatum;  son,  Tom and his wife Lyn;  sons  Jim and  Bennett and the author.   (Photo by Kathy Plunket Versluys.)  

For some 35 years we propagated onlySuffruticosaand sempervirens boxwood. Our nursery expanded:  thousands of plants were produced. Many other plants—azaleas, rhododendrons, hollies, pines, and others-- were introduced to our customers.  We realized during the mid-1970s that there were problems associated with our two basic boxwood cultivars.   Therefore a search began for other boxwood to meet the needs for varying plant types, shapes and tolerance to various exposures. Sure enough, some exciting new cultivars were added to our inventory.

 

 

Chapter 2

Two Maxims for Boxwood Success

 

 I have two strong beliefs, based on a lifetime in horticulture:

 

                   1.   In Horticulture—Variety is Everything - Almost!

             

               My father and his brothers raised fruit, primarily peaches when I was growing up. At one time I grew over 125 acres of peaches.  Our farming operation today comprises over 100 acres of apples plus some peach orchards.  I surely know from experience how the customer and market will frown upon one variety of fruit and will pay far more for another.  We have found that some varieties do better here in our microenvironment, and in other cases certain varieties will not do as well as they do elsewhere.  We have to plant the variety that fits our growing conditions and the one that the customer wants. Planting the wrong variety leads to real trouble—no profit, hence failure in the fruit business. 

              The same principle holds true in the nursery business.  In the forthcoming pages, I will address this concept with respect to boxwood.  Selection of the wrong variety for the microenvironment being planted will produce very disappointing results. 

 

In Cultivar Selection---A Plant Has to Be “Grower Friendly” and Have “Impulse Cosmetics” to Be a Success.

 

              A plant, a fruit, a flower, in order to be of value, has to have these two qualities to be a success.  Of course, “Grower Friendly” means the plant is relatively easy to grow and is adapted to that environment. 

 “Impulse Cosmetics” can be defined as that striking beauty which, in a microsecond makes you spin around in your tracks to take a second look.  To my wife, it means when she is in the dress shop and sees a beautiful dress she cannot resist buying that dress and does not take it home just for approval. She buys it to keep and wear.  To the customer who passes the produce counters in the supermarket and sees the beautiful produce, it means that he buys it and sometimes pays more because it looks good.  To those who are in the nursery and landscape business, it is the “wow” that the plant gives to the landscape.   Is it outstanding?  Does it make you say,   “Boy, where did that beauty come from?”  It is that quality of an item that sums it all up in an oft-quoted saying: “You can’t live without it!”  It means it is so attractive that you cannot resist admiring it and /or buying it! 

See Photo--- The Oval Office and the Rose Garden at the White House in Washington D. C.  at Christmastime.  Note the red bow on the door to the Oval Office and the two cultivars of boxwood.  Large ‘Suffruticosa’are planted along the portico entering the Oval Office, and ‘Justin Brouwers’ flank the edges of the Rose Garden, with ‘Suffruticosa’ planted perpendicular and under the protection of the overhanging trees.   

See Photo --- An aerial view of some of the boxwood gardens at Mt. Vernon, former home of George Washington in Northern Virginia,.  The mansion house and the Potomac River are in the background. (Photo courtesy of the Mount Vernon Ladies Association.)  

See Photo --- A view of the Missouri Botanical Gardens at St. Louis.

See Photo--- A group of boxwood in front of the mansion house at Carter’s Grove Plantation near Williamsburg, Virginia

See Photo --- A  ‘Newport Blue’ along beside a brick walkway at the Lewis Ginter Botanical Garden in Richmond, Virginia.  

 These two, “Grower Friendly” and “Impulse Cosmetics”, go hand in hand.  They are of equal value. Both are necessary for horticultural success. It is like two horses that pull a wagon; they must both pull equally or the wagon does not run smoothly. 

 

2.      In Boxwood—Protection is Everything - Almost!

 

The issue of protection refers mainly to avoiding the damage from the mid- to late-afternoon sun— primarily during the winter and during the scorching hot days of summer.  The winter sun tends to discolor the foliage on most cultivars and this occurrence is so obvious.   In many cases the long-term result is a highly weakened plant or possibly the loss of the plant.  In other cases, the early morning sun shining upon the frozen foliage on the eastern exposure often may cause seared and unsightly leaves. 

             Recently Mrs. Scot Butler of Winchester, Virginia commented:  “Your protection idea is one of the main considerations in siting boxwoods!” 

 

See Photo ---‘Grace Hendrick Phillips’, ‘Justin Brouwers’ and ‘Green Pillow’ growing in a very protected area and partial shade at the National Arboretum, in Washington, D. C.

 

Bark Splitting

 

The most devastating damage is exposure to the sun in the late afternoon during the winter months.  To help persons understand sun exposure, we often use the illustration that the most damaging problems occur to plants exposed to the late sun on Christmas Day.  Not only does the bronzing of foliage occur, in many cases there is the loss of the plant through bark splitting. 

I believe this is the same damage that has caused extensive damage to peach and apple trees on sunny sites.  In fruit production, we call it “southwest injury” or “winter injury”.  What happens in fruit trees is that the temperature just beneath the bark, in the cambium layer, increases dramatically as the sun shines upon the naked, exposed trunk, increasing the temperature sometimes as much as 40 degrees Fahrenheit above the surrounding air temperature. For instance, if the air temperature is 60 degrees then that temperature in the cambium layer may on sunny days increase to 100 degrees.  Then a cold front comes through at night and the air temperature drops to 15-20 degrees.  The bark temperature at night drops to the air temperature and the bark often splits or cracks and with eventual loss of the plant.  If the plant is protected, then these high daytime temperatures are not attained. 

A primary cause of bark spitting in smaller plants is sometimes that they are too vigorous and go into the winter without “hardening off” (that process where the plant twigs and foliage have ceased to grow and are ready for cold weather).  One of the common culprits here is applying fertilizer too late in the season, the plant becomes stimulated, and the cold of winter comes too quickly on the succulent growth, and the bark splits.   The old folks would say; “The sap is up too high!"

 

Varying Microenvironments on the Home site

 

 Persons who have plants doing well in protected northern or eastern exposures, or shadowed by some old big trees, often plant the same cultivar in “wide open” areas expecting to get the same results. Many times the result is quite different from what was expected—the microenvironment has changed. The plant that was grown in one microenvironment was moved sometimes ever so little—maybe from one side of the house to the other—often on the same lot.   The results are sometimes quite disappointing. 

See Photo  --- A row of ‘Suffruticosa’ in an ideal shady environment near Amherst, Virginia.  

               In summer, natural or man-made shade affords another benefit. The reduced temperatures found under a canopy of trees or in their shadows, or in the protection of a tree or building, keep the soil surface cooler on extremely hot days.  This “over story” shade moderates fluctuations in temperature.  One added benefit is that in heavy or poorly drained soils, trees take up some of the excessive soil moisture, contributing to the survival of some cultivars that are very susceptible to root rot problems.  I surely do not recommend planting extremely close to a big tree.  Plant near the drip line of the trees, preferably on the northern and eastern sides—hovering a little bit under the outer leaf area. 

                Boxwood is synonymous with many early colonial estates in Virginia and the surrounding area, where some of the most beautiful and stunning plants are still scattered among the old overhanging protective trees.  Often as these protective trees have been removed, the boxwood lose much of their fine beauty. Boxwood over the years has been planted in rows or beds.  It is quite interesting to note variations in quality of these plants where some have been protected and are doing quite nicely, while adjacent plants, without the luxury of the trees’ shade and their friendly protection, have large discolored areas.  Some may appear stunted, and in other places the plants are missing or dying. 

See Photo --- A group of handsome English  (‘Suffruticosa’), shaded by old trees, at Carter’s Grove Plantation near Williamsburg, Virginia.

 

Use Trees for Protection

 

               Nature has given us a panorama of trees.  Use them to protect boxwood.  Boxwood are not particularly choosy about which tree they prefer.  Trees with a deep root system would be preferable to those that have an abundance of roots near the ground surface, which would compete with the boxwood root system.  High, loose, dappled shade that protects the plant from near midday to the southwest setting of the sun is preferred. And truly this protection is a Godsend for boxwood quality and even survival, sometimes. 

See Photo  ---View of sempervirens planting at Cheekwood Botanical Garden and Museum of Art, in Nashville, Tennessee.  Note the high shade and protection.  

The question then becomes, what type of tree do I plant?  Many of the old boxwood nurseries planted locust trees.  They grew fast, they did not have objectionable foliage, and their roots provided some nitrogen to the soil. Fast growing pines have done quite well on some sites. Select a fast growing tree, which may eventually become a part of your desired landscape. 

It is amazing the protection given by leafless (deciduous) trees and large shrubs during winter.  One might think that protection needs to be a complete mass of shade.  Generally, not so! This deciduous protection is often adequate.  This “ latticed snow-fence type”, varying, mingled, non-uniform, dappled shade gives the boxwood the “friendly protection” in winter and then when the protective tree takes on summer’s foliage, it further insulates the shrub from the harshness of scorching midday sun. 

See Photo --- Trees protecting boxwood in the Missouri Botanical Garden in St. Louis, Missouri.  

One whose property does not have adequate protection on the south and the southwest, and who wishes to grow boxwood, would do well to plant trees to provide that protection, shade and environment in which boxwood thrive. 

 There are exceptions. Some cultivars are more tolerant of sunny sites, yet most prefer some protection—especially to the southern and western exposures.

 

Northern Exposures are Usually By Far the Best

 

  P. D. Larson, author of one of the fine books on boxwood, Boxwood  Its History, Cultivation, Propagation and Descriptions, mentioned in one of his lectures that boxwood does best on the north, secondly on the east, thirdly on the south, and worst on the western exposures. 

 I agree with him, yet we need to go further.  The northern exposures are generally by far the best. Hands down!  Why?  The direct sun often does not even strike the plant.  Trees, bushes, buildings or other obstructions shield the plant. In winter on some fully exposed eastern sites, damage occurs when the morning sun shines upon frozen or heavily frosted foliage.  The result of course is scalding or severe bronzing of the foliage.  Here again, protection would prevent this from happening..

See Photo --- Maury Murray with two handsome  sempervirens being protected on the north side of his home near Mt. Vernon, Indiana.  

The winter of 2000-2001 has been a tough one and was very damaging to boxwood plantings in many areas.   It was a time when we could evaluate comparative hardiness of different cultivars as well as comparisons of how size affected survival.  We noted where older, larger plants of the same cultivar in the landscape often survived and were not harmed, whereas younger or recently transplanted plants received extensive damage or were killed.  Generally, the older the plant with a more extensive and deeper root system, the better its chance for survival during harsh winter weather. 

Lastly, we cannot always put our boxwood on the northern exposures and sometimes shade is impossible to attain. It is up to the landscaper to choose locations that will shelter boxwood from extreme exposure if possible or to select those cultivars that are genetically hardier and will be more tolerant of harsh sun and wind. 

 

Boxwood Types-According to Size and Shape

 

The Benchmark Cultivars

 

The following cultivars we call benchmark or reference plants, many of which are well known, while others are newer introductions to the trade.  At this time we feel they are the most distinguished boxwood that have been described in publications, plus many more which are becoming available in their respective categories in the Mid-Atlantic States. 

You will note the minimum hardiness zone as well as the mature size, or a relative size or growth habit for comparison. (Note two fine reference books at the conclusion of this booklet for further data.)  

A feature of this year’s edition of “Best of the Best Cultivars Manual–May 2001 Edition” is additional information concerning pests and diseases, mostly focusing on leaf miner and psyllid.  Most of this data is from the reference book Boxwood   Its History, Cultivation, Propagation and Descriptions, by P. D. Larson.** 

We grow or are testing in our nursery most of the cultivars discussed in the following pages.  We do not grow or are discontinuing production of some of these, as well.  

 
 Chapter 3
Upright Cultivars  

 

1.   Dee Runk                Zone 6 **           Height 10-12’        Width  2 to 2.5’  (@ 25 years)**

B. sempervirens  Dee Runk

See Photo --- Two large ‘Dee Runk’ at the home of Mrs. Charles Woltz in Charlottesville, Virginia.  Here are the oldest known specimens of this fine cultivar.  

See Photo --- Allen Byous and Dr. Orville Lindstrom standing beside a ‘Dee Runk’ in the “National Boxwood Trials” test plot at the University of Georgia Experimental Station at Griffin, Georgia,  February 28, 2001.  Their test plants of ‘Dee Runk’ were among the best they had there and are growing in full sun in an open field area.  

 

The oldest known specimens of this exciting new cultivar are growing in the garden of a prominent former University of Virginia professor.  This is a conical grower and is relatively new to the market.  It is quite an impressive plant when pruned to a single central leader and becomes a very distinctive upright plant with branches at about a 45-degree angle.  It has rich green foliage, appears to be a little more conical in its growth pattern than ‘Fastigiata’ and it has performed well in heavy soils where ‘Graham Blandy’ has done poorly. 

 Because of its more recent introduction to the boxwood industry, its range of habitat and hardiness are not fully known.  It is becoming extremely popular.  In the places we have seen it  growing and from information available to us, this has to be one of the best of the uprights. It is not terribly susceptible to root rot problems: it will tolerate more sun than most and will perform in shade as well.  It has a rich leaf color.   We think this is a winner. 

 Pests and Diseases: Being Evaluated--Right now we think it will be similar to ‘Fastigiata’. 

 

2.   Fastigiata                 Zone 6**               Height 12’            Width  5’     (@ 40 years)**

B. sempervirens  Fastigiata  

 

This is a moderately fast-growing conical plant with a minimum of bronzing in winter.  This plant has richer, darker foliage than ‘Graham Blandy’. Probably the richest green color of the uprights.  After its initial pruning as a specimen into a tight conical shape, it forms a handsome plant.  This plant is good as a specimen, for corner or accent use.  Appears much more tolerant to heavy or poorly drained soils than ‘Graham Blandy’. 

We like to train it as a young plant through pruning into a conical central-leader plant.   Because of its superior foliage quality, it may be one of the best uprights.  This plant is becoming quite popular. 

“Pests and Diseases: Resistance to leaf miner and mites.  Indicates some attraction for psyllids.” **           

 

3.  Graham Blandy       Zone 6**      Height 10- 12’      Width 1 to 1.5’    (@ 25 years)**

B. sempervirens  Graham Blandy  

See Photo --- Maybelle Schmidt standing beside a  ‘Graham Blandy’ at the  author’s home in Central Virginia.  

 

This is a pure columnar grower--an accent plant--sometimes used to frame a doorway with “exclamation marks” where little space is available.  This plant was named for the donor of the land now designated as the State Arboretum of Virginia at Blandy Farm at Boyce, Virginia.   It has been grown there for many years.  This was one of the popular early uprights.  It has a very distinctive ‘cigar shape’. The plants have done well at one site at Blandy Farm and another site in Charlottesville where they have been elevated and there is excellent drainage.  
 ‘Graham Blandy’ is very site sensitive and does not do well in poorly drained soils or any soil with high moisture content.  The new spring growth along the sides tends to flop downward. This may be overcome by cutting off about one third of the new growth, or “tipping”, or by wrapping loosely with monofilament fishing line.  The line is tied in a barbershop spiral vertically from the base of the plant upward and secured at the top, thus holding these new branches against the main plant.  

                 An evaluation: To “tell it like it is”, being an “umpire”, here is a tough call and possibly for some an unpopular call.  We cannot really recommend this cultivar.  For many years this was one of the very popular plants because of the “crazy way it grows.” I have several of them growing in my own yard. But trial tests of this cultivar on many sites have proven very disappointing compared to some other uprights, especially ‘Dee Runk’, which have outperformed ‘Graham Blandy’.  Its major drawback is that on many sites this cultivar is not “Grower Friendly” due to its affinity for root rot problems and resultant death of the plant.  Secondly, the foliage color is not as bright and lacks the luster of ‘Dee Runk’ or ‘Fastigiata’.  Thirdly, there is the tendency for the succulent new growth to bend outward and downward. There are other cultivars that are better upright boxwood.                                           

  “Pests and Diseases: Prone to leaf miner and psyllid infestation.” **  

 

4.   John Baldwin                        Zone 6*       Height 10’     Width  3.5’     (@ 25years)*

B. microphylla  John Baldwin 

See Photo --- Mrs. Joan Butler standing beside a large, handsome ‘John Baldwin’ at her home of in Winchester, Virginia.   

An attractive, small-leaved upright plant. It is a slow grower. It was found as a seedling growing in Historic Williamsburg, Virginia.  The shape tends to be more columnar and it gets fatter as it grows.  Its shape somewhat resembles the old typical ‘Cola’ bottle of the World War II era—more columnar at the base, more pointed at the top.  It is a favorite to many.  Mrs. Joan Butler states, “I cannot find any disadvantage of this plant.” 

In some of the plantings it is called “Little leaf Boxwood” due to the size of its leaves. The leaves are much smaller than the other uprights and tend to have a blue-green cast. Its foliage gives a bit of class to the landscape. Will perform well in moderate shade as well as in open sites.  Frankly, the more we see the plant the better we like it.  From the photos, note its range of adaptability Northern Virginia to St. Louis. 

 “Pests and Diseases: Resistance to leaf miner, psyllid, and mites.” ** 

 

 

Chapter 4

 

Very Dwarf Cultivars  

 

 

1.   Grace Hendrick Phillips  Zone 5*or 6** Ht 1’ to 1.5’Width 3’to 3.5’(@ 25 yrs.)**

B. microphylla   Grace Hendrick Phillips  

See Photo --- Large specimen ‘Grace Hendrick Phillips’ in the National Arboretum in Washington, D.C.  This is the largest specimen of this plant that I have seen and has grown to about a 9 foot spread and is probably over 3 feet tall.  This plant is very old and is growing under conditions it likes very much—lots of protection and heavy shade.  

An impressive dwarf mounded plant.   Annual growth of ½ to ¾” in height and 1½ to 2” in width.  May be used as a specimen, edging, or bonsai.   Attractive rich green foliage. It is a sport of Buxus microphylla ‘Compacta’, but usually a richer green and faster grower with a spreading habit similar to its parent.   

When we consider the very broad plant shown in the photo at the National Arboretum, perhaps one would say: ‘This plant is not a dwarf!’  For sure this plant  is unusually large, but when considering the growth habit of the cultivar we agree with Mrs. Scot Butler of Winchester, Virginia, who states positively,  “This plant is a dwarf!”  

The plant is similar in growth habit to Ilex crenata helleri, yet it does not grow as fast and has more distinction.   Best dark color is maintained in shade, not in full sun. Mature specimens are at the National Arboretum in Washington, D.C.  

 “Pests and Diseases: Resistance to leaf miner, psyllid and mites.” ** 

 

 2.   Green Pillow                     Zone 5*           Height 30”       Width 40”     (@ 30 years)*

B. microphylla  Green Pillow

 

See Photo --- My wife, Tatum Saunders standing beside a ‘Green Pillow’ at National Arboretum, in Washington, D. C.  

See Photo --- ‘Green Pillow’ planted along the grass  in its most famous planting, along the edges of the Jacqueline Kennedy Garden at the White House, in Washington, D. C.  

This is a low, mounding dwarf plant. As a smaller plant its shape is similar to a squatty, half-inflated basketball.  Good for dwarf edging.  This is a slow grower.  As a small plant it is similar to ‘Morris Dwarf’ and ‘Morris Midget’, yet it matures a bit larger.  Two rows of these plants, planted in 1962, are at the White House in Washington, D. C., and they are doing well there. 

 The new foliage on the plant appears to hold its new light green color longer than most cultivars and this is a very distinguishing characteristic.  Often this new foliage is frosted or frozen in the fall, making this plant a bit unsightly. Mature specimens are at the National Arboretum in Washington, D.C. and the Missouri Botanical Garden in St. Louis, Missouri. 

“Pests and Diseases: Resistance to leaf miner, psyllid and mites.” **

   

3.   Morris Dwarf          Zone 5** or  6*       Height 3’      Width 4.5’     (@ 40 years)*

B. microphylla var. japonica  Morris Dwarf  

See Photo --- ‘Morris Dwarf’ forming the center planting of a parterre at Mount Vernon.  This planting replaces a planting where ‘Suffruticosa’ had not done well.  This parterre is in near full sun and the plants around the perimeter of the planting are ‘Justin Brouwers’.  

See Photo  --- A very outstanding group of three ‘Morris Dwarf’  at Blandy, the State Arboretum of Virginia, near Wnchester.  

See Photo --- Caleb Saunders beside a small row of ‘Morris Dwarf’ along a walkway at the office of Saunders Brothers  near Piney River, Virginia.  

‘Morris Dwarf’ is a compact plant that originated as an open-pollinated seedling at the Morris Arboretum in Philadelphia. Clusters of 2-3” somewhat brittle shoots result in a tufted bush outline.   This plant tends to get larger than its sister plant, ‘Morris Midget’. 

They have been successfully used in dwarf gardens and other uses where very dwarf plants are needed. Care must be exercised to monitor and to cut out any shoot-reversions that often occur on this cultivar. In some of the gardens where this plant has been used it is a favorite. 

Words of Caution:  There appear to be at least two different strains of this cultivar.  One is very dwarf, which is impressive, and a larger plant that is very unimpressive. One is probably correctly identified as the ‘Morris Dwarf’, while the other is incorrectly identified.  This variation might have been a result of the tendency of this plant to “throw sports”— twigs and limbs developing on the main plant structure that are not true in type to the parent plant. 

 “Pests and Diseases: Resistance to leaf miner, psyllid and mites.” **  

 

4.   Morris Midget         Zone 5** or