‘LIST OF PLANTS III 
greenhouse kinds are propagated by grafting on stocks 
of D. Laureola and D. pontica in spring when the sap is 
in motion. 
Datura.—The shrubby kinds, generally called Brug- 
mansias, are raised from cuttings of young shoots in 
spring when they have grown 6 inches long, taken off 
with a heel, inserted in sandy compost, and placed in a 
warm house with gentle bottom heat; the annual species 
from seed sown in March under glass and grown on to 
plant outdoors in May. 
DELPHINIUMS.—The named herbaceous kinds of these 
stately and handsome flowering plants are increased by 
division of the roots in autumn or spring, also by cut- 
tings of young shoots, 3 inches long, in a cold frame in 
September or March. Seeds of the annual species and 
varieties (Larkspurs) may be sown indoors to get them 
forward, or outside on a warm border in April. 
Deutzias.—Propagate by rather firm young cuttings, 
3 inches long, under handlights in June and July, or by 
ripened shoots, 10 to 12 inches long, firmly planted half 
their length in a shady border in autumn. 
DiantHus.—The many beautiful garden flowers of 
this extensive genus are mostly perennials, propagated 
either by seeds, cuttings, or layers (see Carnations, 
Pinks, and Sweet Williams). D. chinensis is success- 
fully grown as an annual by sowing in pots or open 
ground in March. 
DicENTRA (Dielytra).—Increased mainly by dividing 
the roots in early spring just before growth is commenc- 
ing. Short lengths of fleshy roots planted in sandy soil 
in March will also produce young plants. 
Dictamnus.—These, noted for their resinous proper- 
ties and odorous exhalations, are best raised from seed 
