Robinia

Robinia is indigenous in North America, and comprises 20 species, of which R. psaidoacacia, a tree up to 25 m tall, with attractive, pale green foliage and fragrant, white flowers, is also known as acacia, while the genus Acacia is popularly known as mimosa.

This is a deciduous shrub or tree which forms root suckers. It often has thorny, sometimes hair)’ or sticky branches, spreading, unevenly pinnate leaves consisting of thin, oval leaflets and a terminal leaflet, clusters of white, lilac or pink, pea-like flowers, and sometimes striking, hairy pods. R. hispida, rose acacia, is a broad shrub, 1-1.5 m tall, which flowers in June, and often again in late summer. It has thornless shoots which are red and covered with stiff hairs at first, and later turn green with red tips, 9-13 round-oval leaves, 1-4 cm long, compact, pendent clusters of pink or pinkish-white flowers and hairy pods (rarely). This shrub requires a sunny spot sheltered from the wind, in front of other plants or trained against a wall, in well-drained, light, nutritious soil, with some lime. It can be pruned back hard after flowering. Propagate from seed, root suckers or by layering.

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