Early-flowering perennials, specially useful for cut flowers when the season of the spring bulbs is passing. The flowers, like tall yellow daisies, are held erect on graceful 2-ft. Stems, and help to give height to the mixed border at a season when most flowers are of the dwarf type.
Any ordinary well-worked garden soil suits them, and thoy are easily increased by division of the roots. Division and planting should preferably take place in September.
Draba (Whitlow Grass). Hardy rock plants.
Plant in spring in any ordinary soil, in the crevices of sunny rock gardens, or on walls, etc. Divide the roots in March. Seeds may be sown in April, in sandy soil, in the position where they are to grow.
The best for the amateurs garden are:
D. aizoides, golden flowers, March-April. 4-in.
D. borealis, white flowers, March-June.
D. imbricata, golden flowers. 1-in.
D. pyrenaica, lilac flowers, May-June. 2-in.
Dracocephalum (Dragon3 Head). Perennial border plants bearing blue-violet flowers on stems l-l£ ft. in height.
Plant in autumn or spring in a light ordinary soil in a cool and partly-shaded spot. Take cuttings of shoots in April or May. Divide the roots in autumn or spring. Seeds may also be sown in April, in a light sandy soil in the position where they are to grow.
D. Isabella, violet-purple, June-July. 9-12 in.
D. Purdomi, violet, July. 9-in.
D. Ruyschiana, purple, July. 18-in.
D. R. japonicum, lavender-blue, July. 13-in.
Dryas (Mountain Avens). Evergreen -railing plants which make excellent rockery and border plants.
Plant in autumn or spring in a moist peaty soil in a sunny position. Take cuttings in autumn, or divide the plants in autumn or spring. Seeds may also be sown in sandy peat in spring.
Dryas oclopelala has white flowers with golden centres, and is 3-in. In height.
Echinops (Globe Thistle). Hardy border plants.
Plant in autumn or spring in an ordinary soil in a well-drained sunny position. Divide the roots in autumn or spring. Seeds may also be sown in April. A sunny position is essential.
Some of the best varieties for the amateurs garden are: E. humilis, bright blue, July. 3-ft.
E. iiiveas, white, Avith silvery foliage. 4-ft,
E. ritro, deep blue, July. 4-ft.
E. ruthenicus, deep blue, July.
E. sphazroccphalus, bluish-white, July. 6-7 ft.
Echium (Vipers Bugloss). Eorder or wild garden plants.
Plant in August or April in an ordinarj soil in a sunny well-drained position. Increase by seeds sown in April or August in an open sunny position.
E. albicans has rose or violet flowers which appear in summer. Height 1-ft.