June 7, 1919 



HORTICULTURE 



551 



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(.Continued from page 547) 

 Some pains has been taken at the 

 Arnold Arboretum to illustrate the 

 value of these American Viburnums 

 for planting in parks and gardens. It 

 has been shown that they can be im- 

 proved greatly by cultivation, and that 

 with good treatment they will grow in- 

 to large and remarkably attractive 

 plants. There are a few other Ameri- 

 can Viburnums, but they are of less 

 importance as garden ornaments. 



Then there is the group of Vibur- 

 nums from western Asia which have 

 considerable value, although they are 

 rather inferior on the whole to the 

 American species mentioned. V. Sarg- 

 entii is among the best of the foreign- 

 ers, and is a very handsome plant. It 

 belongs to the opulus group with ster- 

 ile flowers forming a ring around the 

 inflorescence. These flowers are larger 

 on Viburnum Sargentii than on the 

 American and European species of this 

 group. It is not so handsome in the 

 fall, though, as the fruits are smaller 

 and less brilliant In color. 



The Asiatic V. tormentosum, which 

 is found in both Japan and western 

 China makes a shrub of considerable 

 size and bears large numbers of flat 

 flower clusters surrounded by rings 

 of ray flowers. Professor Sargent of 

 the Arboretum considers this one of 

 the handsomest shrubs which has been 

 brought from eastern Asia to the gar- 

 dens of this country. The snowball 

 form commonly catalogued as Vibur- 

 num plicatum should be named, to be 

 correct, V. tormentosum var. dilata- 

 tum. There is a Chinese snowball 

 called V. macrocephalum, with pure 

 white, sterile flowers in larger heads 

 than those of other snowballs. It is 

 hardy and free flowering, but as it is 

 not a vigorous or a long lived plant, is 

 not to be recommended to nurserymen 

 or for garden culture. Yet a few very 

 fine specimens are to be found in 

 America. Probably the best of all is 

 in a garden near Wilmington, Dela- 

 ware. It is 12 feet high and 15 feet 

 broad. Nearby is a second specimen 

 10 by 13 feet. Estate owners who are 

 willing to spend money for brief effects 

 no doubt will be pleased with plants of 

 this species. 



Viburnum Seiboldii is a fast growing 

 and hardy plant, probably one of the 

 best of the Asiatic species for this 

 climate, although its leaves when 

 crushed throw off a very disagreeable 

 Oder. V. dilatatum. is a handsomer 

 plant, and is especially desirable for 

 \the bright red fruit which it produces 

 in the fall, making it a fine addition 

 ( to the autumn garden. 



There are other species from the 

 far east but the most meritorious have 

 been mentioned, with the possible ex- 



ception of Viburnum Carlesii. which 

 flowers very early in the season, and is 

 worthwhile planting because of its 

 sweet perfume, even though it is not 

 particularly attractive after the flower- 

 ing season is passed. As a novelty it 

 is certain to sell, and probably will be 

 distributed more widely than any ot 

 the other Asiatic species. 



BUSH HONEYSUCKLES. 



Prof. C. S. Sargent of the Arnold 

 Arboretum says: 



"For northern gardens there are no 

 more beautiful plants than some of 

 the Bush Honeysuckles, with their 

 myriads of yellow, white, rose color 

 or red flowers which in summer or 

 autumn are followed by lustrous, 

 usually scarlet fruits. Nearly all of 

 these shrubs are able to show their 

 greatest beauty in this climate, but 

 this can be obtained only by planting 

 them in rich soil and with sufficient 

 space for free growth in all directions. 

 In poor soil and when crowded by 

 other plants they are usually miser- 

 able objects. The large growing kinds 

 like the different forms of L. tatarica, 

 the hybrids L. bella and its varieties 

 with white and with rose-colored 

 flowers, and L. notha, should be plant- 

 ed as isolated specimens at least 

 twenty feet from any other plant. L. 

 Morrowi, a plant of the Amoor region 

 in eastern Siberia, requires even more 

 space, for its lower branches which 

 cling close to the ground naturally 

 spread over a great area. This shrub 

 has gray-green foliage, comparatively 

 large white flowers and bright red 

 fruits. It is one of the most useful 

 of the early introductions of the Arbo- 

 retum into the United States and has 

 been largely planted in the Boston 

 parks. Like many other bush honey- 

 suckles, L. Morrowi hybridizes easily 

 with other species, and most of the 

 plants raised from seeds, now sold by 

 American nurserymen as L. Morrowi, 

 are hybrids of this species with L. 

 tatarica and are erect growing plants 

 of little value for those who want 

 plants with the peculiar habit of L. 

 Morrowi. Among the less vigorous 

 growing plants attention is called to 

 two hybrids of L.. Korolkowi in the 

 collection, L. amoena and L. Arnoldi- 

 ana. These have small gray-green fo- 

 liage and small, bright pink and very 

 attractive flowers, and are, perhaps, 

 not surpassed in grace and beauty by 

 any honeysuckles in the collection." 



