CERATOSTIGMA or PLUMBAGO

P. Indispensable low-growing perennials of shrubby habit with blue flowers.

Ceratostigma Willmottianum grows to about 3 ft. in the open border but usually dies back to soil level in winter. Against a warm wall it usually grows taller. The flowers appear from July to the end of September. Ceratostigma plumbaginoides (Plumbago larpentae) has flowers resembling periwinkles in late summer, growing to about 1 ft. It is a first-rate rockery plant. The foliage frequently turns purplish-red at the same time. Both species may be increased by division in late spring.

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