Dolichos Lablab.--Half-hardy annuals. The seed should be sown in
spring in pots placed in heat, and kept in the hothouse till May, when
the plants may be set out in a sheltered position, placing sticks for
them to run up, in the like manner to Beans. Flower in July. Height, 6
ft.
Dondia Epipactis.--A very pretty and extremely hardy little perennial,
suitable for either pot culture or rock-work. It thrives in peat or
leaf-mould, and likes a moist position. Strong clumps may be divided
in February, but it is rather shy at being moved. It flowers in May.
Height, 6 in.
Doronicum (_Leopards Bane_).--An ornamental hardy perennial. It will
grow in any garden soil, and may be propagated from seed sown either
in the autumn or spring, or by dividing the root. It produces its
flowers in May. Height, 1-1/2 ft.
Draba.--Pretty dwarf Alpine plants which bloom during April and May;
very suitable for rock-work. They flourish in a compost of loam and
peat, and may be propagated by seed or division. Height, 1-1/2 in. to
3 in.
Dracaena Indivisa.--A stove evergreen shrub much valued for its
foliage and as a table plant. It requires a light, loamy soil and
plenty of light. Cuttings stuck in tan or peat and sand, and provided
with strong heat, will strike. It flowers in June. Height, 3 ft.
Dracocephalum (_Dragon's Head_).--Ornamental plants, mostly bearing
lilac or blue flowers. Many of the half-hardy kinds are grown in pots,
so that they may the more readily be removed to the greenhouse in
winter. The perennials are propagated by dividing the roots. The
annuals are increased from seed sown in March or early in April. They
like a rich, light soil, and come into bloom in June and July. Height,
1 ft. to 2 ft.
Dracophyllum.--Greenhouse evergreen shrubs of an ornamental character.
The pots should be filled with an equal mixture of sand and peat. They
are propagated by planting the young shoots in sand, covering them
with a hand-glass, and plunging them in heat. They flower in June.
Height, 2 ft.