Indigofera astragalina Plant Care

Indigofera astragalina (Indigofera astragalina) belongs to the Fabaceae family within the Indigofera genus. Indigofera astragalina is native to India, tropical Africa, Madagascar, New Guinea and Australia.

Indigofera astragalina displays an upright, spreading shrub growth habit, reaching up to 4 ft tall with a spread of approximately 6 ft. Indigofera astragalina produces showy clusters of pink, purple, or white pea-like flowers.

Leaf size: approximately 3 inches.

Water a young or newly planted Indigofera astragalina every 7–10 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Indigofera astragalina thrives in full sun to partial shade.

Indigofera astragalina tolerates temperatures of 50–85°F. Indigofera astragalina prefers humidity levels of 40–70%.

Well-draining sandy loam with added organic matter. Good drainage is essential for Indigofera astragalina to prevent waterlogging, which leads to root rot and fungal issues.

Feed Indigofera astragalina every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Choose a spot with full sun to partial shade and well-draining sandy loam with added organic matter. Avoid low spots where water collects after rain.

Indigofera astragalina is suited to USDA Zone 10a – 12b.

Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.

Indigofera astragalina can spread to about 6 ft (1.8 m) and reach about 4 ft (1 m) tall. Space plants about 6 ft (1.8 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the plant spacing calculator.

Prune Indigofera astragalina while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.

Indigofera astragalina is frost-tender (hardy to USDA zone 10). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Indigofera astragalina can be propagated through seeds, softwood cuttings. Similar propagation techniques also apply to kirilow's indigo plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Indigofera astragalina is susceptible to aphids, leafhoppers, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Indigofera astragalina grows outdoors in USDA Zone 10a – 12b. It survives winters down to planting zone 10a. Indigofera astragalina is native to India, tropical Africa, Madagascar, New Guinea and Australia. In cooler regions, grow Indigofera astragalina as a houseplant or bring it indoors before the first frost.