COLUTEA or BLADDER SENNA

FLOWERING SHRUB. An easily-grown shrub which does especially well in town gardens. The pea-shaped yellow flowers of Colutea arborescens are borne in summer, followed by inflated seed pods. All varieties need cutting back in winter as they grow quickly even in poor soil, indeed they thrive better in dry, starved ground. Propagate from seed, sown in late autumn in a cold frame.

COMMELINA A much-neglected plant which bears vivid blue flowers in July. Commelina coelestis and its variety alba are the best known forms. A light, warm soil is necessary and in seaside gardens self-sown seedlings often occur. Elsewhere the tubers should be lifted and replanted in late May. Increase by seed sown outside in early April.

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