276 Landscape Gardening 



varieties hybridize freely, so that it is difficult to secure pure 

 seed of any of the garden forms except from wild plants. 

 The different species vary from i to 4 feet in height. 



Coreopsis (C. lanceolata) —k showy, yellow-flowering 

 hardy perennial, of easy culture in any garden soil. The 

 flowers, which are i J to 2 1 inches in diameter, are produced 

 on long stems, making them suitable for cut-flowers. 



Day Lilies (Hosta), Fig. 158.— The blue or white- 

 flowering day lilies belong to the genus Hosta. They are 

 hardy summer-flowering plants, of easy culture in deep rich 

 soil. The broader leaved kinds grow vigorously in moist, 

 shady places. Many varieties have strikingly variegated 

 leaves. The Hostas are propagated by dividing the 

 clumps. Some species produce seed freely which should 

 sown as soon as ripe. Sometimes known as Plantain Lily. 



Day Lilies, Yellow and Orange Flowered {Hemero- 

 callis).— The old garden flower is found in many gardens. 

 The plant has narrow, grass-like foUage, whereas the Hostas 

 have broad foliage. The plants are remarkably free from 

 insect or other pests, and are perfectly hardy without any 

 protection. The roots are fleshy, and the plant thrives in 

 almost any garden soil, but succeeds best in moist situations 

 and in partial shade. It is an excellent plant around the 

 margin of ponds. 



The genus includes the Lemon Lily {H. flava), one of the 

 finest perennials, and the Brown Day Lily {H. fulva), com- 

 mon in every old garden. 



Fraxinella or Gas Plant {Didamus alhus Lmn.). — ^A 

 very hardy old garden plant producing large terminal 

 racemes of flowers. There are two forms, the pink and the 

 white flowered. The plant is of sturdy, bold, upright 

 growth, attaining a height of 3 feet. A strong, heavy, 

 moderately rich soil suits them best. They are not fastidi- 

 ous as to situation, succeeding in full sun and in partial 



