This section is from the book "Commercial Gardening Vol4", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
A pretty Leguminous shrub, 2-3 ft. high, with slender arching shoots, pinnate grey-green leaves, and erect racemes of rose-purple flowers from July to September. Grows in any good garden soil, and quite hardy in the milder parts of the kingdom. Raised from seeds and cuttings. J. decora, from China and Japan, is an evergreen, 1-3 ft. high, having a reddish-purple and a white-flowered form.