Plant Profile - Robinia

Published
12/13/2012

Quick Guide: summer, hardy, full sun, height: 15m/50ft, width: 6m/20ft

The yellow-green, elegant foliage of Robinia pseudoacacia is best appreciated in larger gardens. Related to the laburnum (both are members of the pea family), robinias bear similar flowers in racemes up to 15cm/6in long in late spring or early summer. Short spines protrude along the stems.

GROWING Plant between autumn and spring in any type of well-drained soil in a sunny position sheltered from cold winds. Robinias tolerate atmospheric pollution and do well in areas of low rainfall; in waterlogged soils they are more vulnerable to wind damage. No pruning, is required.

PROPAGATION Sow seed in pans of compost in early spring in a cold frame. Prick off into boxes when large enough to handle. Transfer to nursery beds and grow on for 3 years before planting in the permanent positions.

VARIETIES 'Frisia' (shown), foliage opens bright yellow, turning light green in summer; 'Inermis' (mop-head acacia), compact, round habit, spineless branches, very few flowers.

POSSIBLE PROBLEMS Generally trouble free.