Large-seeded Wisteria Plant Care

Large-seeded Wisteria (Austrocallerya megasperma) belongs to the Fabaceae family within the Austrocallerya genus. Large-seeded Wisteria is native to eastern Australia.

Large-seeded Wisteria displays a tall, upright tree growth habit, reaching up to 15 ft tall with a spread of approximately 8 ft. Large-seeded Wisteria produces showy clusters of yellow or pink pea-like flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Large-seeded Wisteria every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established trees mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Large-seeded Wisteria thrives in full sun to partial shade.

Austrocallerya megasperma tolerates temperatures of 60–80°F. Large-seeded Wisteria prefers humidity levels of 40–70%.

Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Large-seeded Wisteria to prevent waterlogging, which leads to root rot and fungal issues.

Feed Large-seeded Wisteria every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees 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 loamy soil with added compost for nutrients. Avoid low spots where water collects after rain.

Large-seeded Wisteria is suited to USDA Zone 13a.

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

Large-seeded Wisteria can spread to about 8 ft (2.4 m) and reach about 15 ft (5 m) tall. Space plants about 8 ft (2.4 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 tree spacing calculator.

Prune Large-seeded Wisteria 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 tree in one year.

Large-seeded Wisteria is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Large-seeded Wisteria can be propagated through seeds, stem cuttings.

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

Large-seeded Wisteria is susceptible to aphids, leafhoppers, scale insects. 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.

Large-seeded Wisteria grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Large-seeded Wisteria is native to eastern Australia. In cooler regions, grow Large-seeded Wisteria as a houseplant or bring it indoors before the first frost.