ENCYCLOPEDIA OF GARDENING. 
PERENNIAL SPECIES: D. ambigua (Syn. D. grandiflora and ochroleuca), 
yellow, July and Aug., 3 ft., Europe. 
BIENNIAL SPECIES: D. purpurea (Foxglove), purple, July to Sept., 3 to 5 ft., 
Europe (Britain). There are numerous varieties and strains of this species, the 
gloxinia-flowered being the most beautiful. 
Dill.—See Peucedanum. 
Dillwynia.—Ord. Leguminosa. Greenhouse evergreen flowering 
shrubs. First introduced 1794. 
CULTURE: Compost, equal parts fibry peat & loam, one-fourth part 
sand. Position, pots in sunny greenhouse. Pot, March or June; firm 
poring nant Prune straggling shoots little after flowerin: 
ater freely March to Sept., mmaderately afterwards. Temp., Marc 
to Sept. 60° to 65°; Sept. to March 45° to 50°. Place plants outdoors 
July to Sept. to mature growth. Propagate by seeds sown 1-16in, ey 
in light sandy compost in temp. 65° to 70° in March; cuttings inserte 
in pots of sandy peat under bell-glass in temp. 65° in summer. 
SPECIES CULTIVATED: D. ericifolia, yellow and red, spring, 2 ft., Australia; 
floribunda, yellow and red, spring, 18 in., Australia; hispida, orange and red, 
spring, 1 ft., Australia. 
Dimorphotheca.—Ord. Composita. Half-hardy annuals. 
First introduced 1774. 
INDOOR CULTURE: Compost, two parts sandy loam, one part leaf- 
mould & a liberal addition of silver sani Pot, March or April. Grow 
in cool sunny greenhouse. Water freely during BETnE, & summer, 
moderately in autumn & winter. Temp., Oct. to March 40° to 50°. 
OUTDOOR CULTURE: Soil, ordinary, sandy. Position, sunny, 
warm border. Plant, May & June. Propagate by seeds sown in a 
temp. of 55° to 65° in sandy soil in early spring. 
SPECIES CULTIVATED: D. Ecklonis, white and purple, summer, 2 ft.; pluvialis, 
white and purple, summer, 18 in., pluvialis flore-pleno, double. Native of S. Africa. 
Dionzea (Venus’ Fly-trap).—Ord. Droseracew. Greenhouse her- 
baceous perennials, Insectivorous plants. Leaves, two-lobed, mar- 
gined with teeth & sensitive. 
CULTURE: Compost, equal parts peat & living sphagnum. Posi- 
tion, pots or pans well drained & partly immersed in pans of water, & 
laced. under glass in cool greenhouse. Pot, March or April. Water 
reely always. Temp., Oct. to March 40° to 45°; March to Sept. 45° 
to 55°. Propagate by seeds sown in mixture of sphagnum moss & peat, 
kept aot ander bell-glass in March or April; division of plants in 
March. 
SPECIES CULTIVATED: D. muscipula, white, July and Aug., 6 in., Carolina. 
Dioscorea (Yam).—Ord. Dioscoreacew. Hardy tuberous-rooted 
climbing perennials. Tubers, large, milky, edible, cooked like pota- 
oes. 
CULTURE: Soil, ordinary. Position, sunny, open. Plant small 
tubers 3in. deep & 12in. apart in March. Fix stakes or branches for 
shoots to climb on. Lift & store tubers in frost-proof place in Oct. 
Propagate by cuttings of stems lin. long with leaf attached, inserted 
din. deep in sandy soil under bell-glass in temp. 55° in summer. __ 
SPECIES CULTIVATED: D. Batatus (Yam), white, summer, 12 ft., Philippines. 
Diosma (African Steel-bush)—Ord, Rutacew. Greenhouse ever- 
green flowering shrub. Leaves fragrant. , 
CULTURE: Compost, two parts fibrous peat, one part loam, & silver 
sand. Pot, May, June. Pinch off points of vigorous shoots in July 
& Aug. Water very little Oct. to March, moderately afterwards. 
Temp., Sept. to March 40° to 45°; March to Sept. 50° to 55°. Propa- 
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