Caragana arborescens Siberian Peashrub Description An extremely hardy shrub that can thrive in poor, infertile soils. Bright yellow flowers are produced in spring and followed by pea-like seed pods. Tolerates drought, salt, and wind. Nitrogen fixing roots. Sizes & Prices All Caragana Characteristics Hardiness Zone: 2 Light requirements: Sun Height: 15' Spread: 12' Native: No Sizes & Prices Size: 30'' Ht $49.98 Other Information Caragana arborescens Siberian Peashrub Zone: 2 Sun HT: 15' Caragana arborescens 'Pendula' Weeping Siberian Peashrub Zone: 2 Sun HT: 6'