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10 Μαρ 2023 · Technically, “indigo plants” could refer to any of the 750-plus species of trees, shrubs, herbaceous perennials, or annuals within the Indigofera genus. Here, we’ll cover a handful of popular species that can be grown in the US: I. amblyantha, I. decora, I. heterantha, and I. kirilowii.
Genus: Indigofera. Species: heterantha. Skill Level: Experienced. Exposure: Full sun. Hardiness: Hardy. Soil type: Well-drained/light. Height: 180cm. Spread: 180cm. Time to plant seeds:...
Himalayan indigo. A medium-sized deciduous shrub, herbaceous in colder areas and then making up to 1.2m annual growth. Leaves pinnate with 13-21 small leaflets. Flowers 12mm, rosy-purple, in racemes to 12cm in length from early summer.
Indigo, (genus Indigofera), large genus of more than 750 species of shrubs, trees, and herbs in the pea family (Fabaceae). Some species, particularly true indigo (Indigofera tinctoria) and Natal indigo (I. arrecta), were once an important source of indigo dye.
A deciduous shrub with downy, slightly-ribbed branches. At Kew, where it is almost invariably cut back to the ground each winter, it sends up a dense thicket of erect, scarcely branched shoots 2 to 4 ft high, clothed from top to bottom with leaves.
Native of China and Japan; introduced about 1845 by Fortune, who found it growing in the gardens of Shanghai. It is a charming dwarf shrub, flowering freely in July and August, its shoots being mostly cut back to the ground in winter.
This low growing dense suckering shrub is 2-3 ft high with 3-4ft width and suckering habit which can be used as a ground cover. It is drought tolerant and accepts a range of soil types including clay. It will tolerate alkaline soils.
