![]() An erect twiggy shrub about 3 feet (.9m) high and wide, it has spiny stems and bright green leaves about an inch (2.5cm) long. tinctoria, Dyer’s Greenwood, Woadwaxen, the hardiest species, which grows in Zones 4 or 5 to 7 and was once used to make dyes. G. spachiana ( G. racemosa), evergreen, similar to G. canariensis, but with larger leaflets and longer, looser spikes of fragrant yellow flowers in late spring.Makes sheet of golden flowers during bloom in late spring and early summer. Leafless, upright, winged, bright green branchlets appear jointed. G. sagittalis, rather rapid grower to 1 foot (.3m) high, with widespread.‘Vancouver Gold’ is an especially floriferous cultivar. It has small hairy leaves and, in spring and summer, it bears short clusters of yellow flowers. Pilosa, Wilky-leaf woadwaxen, is an even shorter species, hardy in Zones 5 or 6 to 7 or 8, grows slowly to about a foot (.3m) high. Fragrant white flowers in late winter, spring. G. monosperma, Bridal Veil Bloom, upright growth to 20 feet (6.1m) high, 10 feet (3.1m) wide, with slender, graceful, gray-green, almost leafless branches.Profusion of flowers at ends of shoots in late spring. Grows to 2 feet (.6m) high, with spreading habit. Nearly leafless, shrublet, often sold erroneously as Cytisus lydia. Plants sold under this name are G. spachiana. fragrans, a white-flowered species not in the nursery trade. Fragrant flowers appear at ends of branches in spring and summer. Bright green leaves divided into .5 inch (1.3cm) leaflets. Many-branched, upright shrub 6-8 feet (1.8-2.4m) wide. Damaged if 15° Fahrenheit (-9☌) but recovers quickly. C. canariensis ( Cytisus canariensis), Canary Island Broom, evergreen.Doubtful if hardy much below 5° Fahrenheit (-15☌). Branches are covered with blooms in summer. Etna Broom, large shrub or small tree to 18 feet (5.5m) or more, with graceful arching, weeping green branchlets, leafless or with very tiny leaves during the growing season. Sow seed in containers outdoors in a cold frame in autumn.Ī flowering Genista Genista Varieties to Grow.Dieback, powdery mildew, and scale insects can occur.Genista may rebloom sparsely if pruned back lightly after reblooming.Pruning season for Genista is after flowering, but is better left natural.Feed Genista with an all-purpose organic fertilizer in spring.Genista cannot tolerate having even damp feet.Sow seed 1/8 inch deep in evenly prepared soil or containers.Space Genista 3 to 10 feet (.9m-3m) apart depending on the variety.Set out young container-grown Genista in early spring in well-drained infertile sandy soil that is rather dry.Genista transplants with difficulty and needs time to establish itself, though it is carefree once growing.Yellow-blooming Genista aetnensis with pink Centranthus ruber When to Plant Genista Plant Genista in well-drained, infertile dryish sandy soil pH 6.5 to 7.5.Genista thrives with little care in sunny spots.Uses: Erosion control on slopes rock garden edger formerly used to make dust brooms. ![]() Bloom time: Spring to summer with some repeat bloom.5-.75 inch (1.3-2cm) long, borne on upright racemes 1-3 inches (2.5-7.6cm) long, followed by dry pods. Foliage: .5-1 inch (1.3-2.5cm) long, rich green leaves are insignificant in winter, Genista stems remain green, adding an attractive touch of color to the garden.Form and habit: Erect, mounded, twiggy, arching, branching.Height and width: 3 to 10 feet (.9m-3m) tall and wide depending on the variety.Growing zones and range: Zones 4 or 5 to 9 depending on the variety.
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