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This is an attractive border biennial, bearing from March to June white campanula-like flowers tinged with purple, on erect stems. It is not particular as to soil, but requires a southern position and protection in winter. Propagated by seeds in the same way as other biennials. Height, 4 ft.
A tamarix-like shrub, bearing clusters of white flowers early in spring. Will grow in any soil or situation. Increased by cuttings placed in sand under glass.
A greenhouse perennial bearing carmine and yellow flowers in June, but is hardy enough to be grown on a warm border. It is increased by off-sets from the root, taken off in May. Height, 2 ft.
A hardy border plant with long spiny foliage, and bearing from July to September large light blue flowers. It requires a light, rich soil. Young cuttings may be struck in sand. Height, 1 ft.
These hardy perennials form pyramidal bushes bearing Pentstemon-like flowers, thickly set and varying in colour from light pink to dark purple. A peat soil suits them best. They may be propagated by cuttings placed under glass, but are best grown from seed. July is their flowering season. Height, 1 ft. to 2 ft.
A beautiful conservatory shrub, bearing in spring a large quantity of flowers resembling the snowdrop. A peaty soil suits it. It is pretty hardy. Height, 3 ft.
