ENCYCLOPHDIA OF GARDENING. 
CULTURE: Compost, equal parts peat & loam, one-fourth part cow 
dung & sand. Position, well-drained pots in moist plant stove. Pot, 
Feb., March, or April. Water moderately Oct. to Feb., freely after- 
wards. Temp., Sept. to March 55° to 65°; March to Sept. 65° to 75°. 
Propagate by cuttings of young side shoots inserted in sandy soil under 
bell-glass in temp. 80° to 85° in March or April. 
SPECIES CULTIVATED: D. humboldtiana, lilac, autumn, 3 to 4 in., Ceylon; 
malayana, yellow, summer, 4 to 6 in., Malaya. 
a a Od: Filices. Stove fern. First introduced 
CULTURE: Compost, two parts loam, one peat, pounded charcoal & 
sand. Pot, Feb. or March. Position, well-drained pots in shady part 
of greenhouse. Water moderately Oct. to Feb., freely afterwards. 
Temp., Sept. to March 60° to 70°; March to Sept. 70° to 80°. Propa- 
gate by spores sown on surface of sandy peat under bell-glass in temp. 
70° to 80° at any time : 
SPECIES OULTIVATED: D. lunulata, tree-like habit, Tropics. 
Dieffenbachia (Dumb Cane).—Ord. Aroidez. Stove ever- 
green perennials. Orn, foliage. First introduced 1863. Leaves, 
broad, deep green, variegated with white or yellow. 
CULTURE: Compost, hae parts peat & loam, one-fourth part de- 
cayed manure & silver sand. Position, well-drained pots in moist plant 
stove. Pot, Feb. or March. Water moderately Sept. to Feb., freely 
afterwards. Syringe daily, June, July & Aug. Shade in summer 
essential. Temp., Sept. to Feb. 55° to 65°; Feb. to Sept. 65° to 85°. 
Propagate by cuttings of stems 1 to 2in. long inserted in sandy soil 
under bell-glass in temp. 75° to 85° in spring. 
SPECIES CULTIVATED: D. Carderi, leaves variegated, Colombia; Chelsoni, 
leaves, green and yellow, Colombia; Leopoldii, leaves, green and white, 8S. America; 
magnifica, leaves, green and white, Venezuela; nobilis, leaves, green and white, 
Brazil; Regina, leaves, white and green, S. America; Rex, leaves, white and 
green, S. America; piota, green and white, Brazil. 
Dielytra.—See Dicentra. 
Diervilla (Bush Honeysuckle).—Ord. Caprifoliacez. Hardy de- 
ciduous shrubs. First introduced 1739. Formerly known by the 
generic name of Weigela. 
CULTURE: Soil, ordinary. Position, moist shady shrubberies, or 
against south, east, or west walls or fences. Plant, Oct. to Feb. Prune 
directly after flowering, shortening shoots that have borne flowers. No 
winter pruning required. Propagate by cuttings of young shoots in- 
serted in pots of sandy soil under bell-glass in cool greenhouse in 
spring; cuttings of firm shoots Gin. long inserted 3in. deep & 2in. 
apart in north border under hand-light in Oct. or Nov. 
SPECIES CULTIVATED: D. floribunda, purple, June, 3 ft., Japan; florida 
(Syn. Weigela rosea), rose and white, May, 6 to 8 ft., China; grandiflora, pink, 
June, 6 to 8 ft., Japan; japonica hortensis, white, summer, 4 ft., Japan; midden- 
dorfiana, yellow, summer, 4 ft., Siberia. Abel Carritre, Eva Rathe, Van Houttei, 
and variegata are popular varieties or hybrids. 
Digitalis (Foxglove).—Ord. Scrophulariacex. Hardy biennial & 
perennial herbs. 
CULTURE OF PERENNIAL SPECIES: Soil, rich ordinary. Posi- 
tion, open shady border, or naturalising in woodlands and wild gardens. 
Plant, Oct., Nov., or April. 
CULTURE OF BIENNIAL SPECIES: Sow seeds 1-16in. deep in 
shady border outdoors in April. Transplant seedlings 3in. apart in 
shady bed in June. Transfer seedlings to flowering ‘position in Oct. or 
Nov. Propagate perennials by seeds sown as directed for biennials; 
division of plants in March. 139 
