February 22, 1919 



HORTICULTURE 



175 



(A paper with the above title was read 

 by Wm. H. Judd at the Eighth Annual 

 Convention of the New England Nursery- 

 men's Association held In Boston, Janu- 

 ary 28 and, 29, 1919.) 



Mr. Judd named and described 

 some of the most attractive of the 

 newer flowering trees and shrubs 

 thriving at the Arnold Arboretum. 

 Among the list were the following: 



Hamamelis vernalis, a native of 

 Missouri and Arkansas, and Hama- 

 melis mollis, and, belonging to the 

 same family, Corylopsis Gotoana. 



Prinsepia sinensis, the first shrub 

 to unfold its leaves in spring, a per- 

 fectly hardy tall and vigorous shrub 

 with spreading spiny branches and 

 clusters of bright yellow flowers pro- 

 duced in the axils of the leaves. The 

 red fruit that comes later is about the 

 size of a cranberry. 



One of the handsomest of the Asi- 

 atic deciduous rhododendrons is Rho- 

 dodendron Schlippenbachii. A perfect- 

 ly hardy shrub bearing in early May 

 beautiful large flesh pink flowers. It 

 should be planted in the shade, for 

 the flowers are of a thin texture and 

 fade out quickly in the sun. Several 

 hundred of seedlings were raised last 

 year and it should soon become a pop- 

 ular variety, although in one or two 

 Massachusetts gardens are some fair 

 sized plants already. 



Rhododendron careanum (R. Pouk- 

 hanensis), a low, compact bush with 

 a profusion of rosy mauve fragrant 

 flowers produced in May. The com- 

 mon variety, "Yodogawa," is a double- 

 flowered form of this species. 



Rhododendron mucronulatum bears 

 pale rose colored flowers about end of 

 April. 



Rhododendron carolinianum, which 

 flowers in June, is one of the best 

 broad leaved evergreens recently in- 

 troduced and never fails to give a crop 

 of its pale rose pink clusters of 

 flowers, either in sun or shade every 

 June. 



There are numerous good varieties 

 of flowering apples, but a selection of 

 one or two of the best would include 

 Malus Arnoldiana, Malus Sieboldil 

 calocarpa, Malus Toringo incisa and 

 the double flowered form of Malus 

 Ioensis known as Bechtels Crab. 



The new roses are numerous but 

 one of the best introduced from China 

 is without doubt Rosa hugonis. The 

 long arching branches are completely 

 covered from end to end with beauti- 

 ful pale yellow flowers. Another new 

 and interesting rose is Rosa Omeien- 

 sis, a vigorous grower, having the 



young stems covered with broad 

 bright red prickles, and in May bears 

 pure white fragrant flowers with only 

 four petals. 



Rosa multiflora cathayensis should 

 be taken hold of by the hybridist. It 

 is a climber and Chinese representa- 

 tive of the well-known multiflora, but 

 bears large clusters of single pink 

 flowers with a centre of yellow an- 

 thers flowering about the middle of 

 May. It fruits freely and Is one of 

 the parents of the Crimson Rambler. 



The Cotoneasters have recently at- 

 tracted the most attention of any of 

 the newer Chinese shrubs. There are 

 about fourteen varieties useful as 

 decorative shrubs. The very best ones 

 include first of all, Cotoneaster racemi- 

 flora soongorica. It is a tall, much 

 branched, wide spreading shrub, and 

 during May the slender arching branch- 

 es are closely packed with clusters of 

 white flowers in upright trusses, and 

 in the fall the shrub is completely 

 covered with bright red fruits and is 

 probably the most attractive shrub in 

 the Arboretum. 



A very similar shrub is Cotoneaster 

 multiflora calocarpa — bluish green fo- 

 liage and produces erect clusters of 

 white flowers. With this one the 

 flower Is the most attractive part as 

 it is with Cotoneaster hupehensls, in 

 May looking like one hugh bush of 

 spiraea. This Is the handsomest of 

 all in flower. Other good varieties 

 are Cotoneaster nitens, with shiny 

 small foliage and a profusion of small 

 black fruit; Cotoneaster dielsiana, 

 with small red fruit in clusters, and 

 Cotoneaster divaricata, with large oval 

 red fruit that remain on till Decem- 

 ber. Cotoneaster apiculata and Coton- 

 easter adpressa are fine for the rock- 

 ery. 



Among Diervillas the most attrac- 

 tive of all the numerous hybrids and 

 species, Dierville florida venusta takes 

 first place. Every year all the branches 

 are closely covered with the long tu- 

 bular rose pink flowers. This ranks 

 as one of the best new decorative 

 shrubs of recent years, and is quite 

 hardy. 



Among Viburnums there are two of 

 merit, namely V. theiferum and V. 

 hupehensis. The former during Octo- 

 ber, bears very showy fruit in large 

 pendulous clusters, light orange color 

 changing later to scarlet. V. hupehen- 

 sis bears in fall drooping clusters of 

 large red berries, as large as those of 

 V. Opulus. 



For its fragrance in flower, there is 

 no more delightful shrub than Syringa 

 pubescens. equally as attractive as any 

 of the popular forms of lilac and 

 should be better known than it is. It 

 bears long tubular flowers of pale lilac 

 that fill the surroundings with a de- 

 lightful perfume. 



Neillia sinensis has slender droop- 

 ing branches and at the end of every 

 branchlet Is a raceme of bell shaped 

 clear pink flowers during June. This 

 is considered by some people to be 



one of the most attractive new Chinese 

 shrubs. 



During the month of July there Is 

 no more attractive bush than Cytisus 

 nigricans. It is a compact little bush 

 about three feet high, every year cov- 

 ered by long erect racemes of bright 

 yellow flowers of a bright yellow color 

 and freely produced. 



Deutzia hypoglauca Is one of the 

 hardiest and best of the new species 

 from China. It is tall and produces 

 very pretty clusters of white; flowers. 



Indigofera amblyantha must not be 

 forgotten as one of the shrubs that 

 gives a continuance of flowers for 

 three months, axillary racemes of 

 small rose pink flowers that continue 

 to expand from the end of June till 

 October. 



Coming to the fall one of the most 

 attractive trees is Acanthopanax ricin- 

 ifolia. This is a tree with stems and 

 branches covered with stout prickles 

 and bears large lobed foliage very sim- 

 ilar to that of the Castor Oil Plant. 



Among evergreens it is too early to 

 say anything definite about the new- 

 Chinese Spruces but Abies holophylla 

 promises to be one of our best new 

 firs. A large number of seedlings 

 are now growing from seed collected 

 by Mr. Wilson in Korea a year ago, 

 but there are one or two plants in 

 Massachusetts twelve years of age. 



The so-called .Picea Albertiana is 

 proving very popular and is a good 

 plant for the rockery or a dwarf col- 

 lection, but I believe as it gets older 

 ,it will become bare and unsightly at 

 the base. 



Considerable interest has been 

 taken with the Asiatic cherries the 

 last few years, one of the best and 

 most hardy ones being Prunus serru- 

 lata sacchaliensis. It grows into quite 

 a large tree and has pink and rose 

 colored flowers. It is suggested as a 

 good hardy stock for most of the tree 

 like cherries. 



Viburnum Carlesii has found its 

 place as the most fragrant of all the 

 Viburnums and the flowers that are 

 pink in bud. changing to white, open 

 in succession for several weeks. 



Lonicera syringantha Wolfii long 

 drooping branches and clusters of fra- 

 grant violet colored flowers. (Middle 

 of May). 



How many nurserymen carry that 

 beautiful old Syringa Rothomagensis 

 (chinensis) or Ruen Lilac as it is 

 called. It is one of the handsomest, 

 hardiest, and most vigorous of all the 

 lilacs. It bears enormous clusters of 

 small flowers of the ordinary lilac 

 color. (It is a hybrid between Persica 

 and vulgaris.) 



A late flowering lilac known as 

 Syringa Wolfii (from middle to end 

 of June) is very handsome, bearing 

 dark bluish purple flowers very pro- 

 fusel v. It Is a native of Mongolia and 

 has been in the Arboretum since 1906. 



Laburnum Alpinum is the handsom- 

 est yellow flowered small tree that can 

 be grown in New England and curious- 

 ly is little known. It seeds freely 

 every year and a quantity usually 

 spring up under the tree. 



