Weddell Aa Plant Care

Weddell Aa (Aa weddelliana) belongs to the Orchidaceae family within the Aa genus. Weddell Aa is native to Brazil.

Weddell Aa displays an epiphytic, clumping growth habit, reaching up to 1 ft tall with a spread of approximately 1 ft. Weddell Aa produces colorful, fragrant blooms in various shapes and sizes.

Leaf size: approximately 12 inches.

Water a young or newly planted Weddell Aa every 7–14 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.

Weddell Aa thrives in bright indirect light. Avoid placing Weddell Aa in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Aa weddelliana tolerates temperatures of 65–80°F. Weddell Aa prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining orchid mix with bark and perlite. Good drainage is essential for Weddell Aa to prevent waterlogging, which leads to root rot and fungal issues.

Feed Weddell Aa every 2 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 bright indirect light and well-draining orchid mix with bark and perlite. Avoid low spots where water collects after rain.

Weddell Aa is suited to USDA Zone 11b – 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.

Weddell Aa can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 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 Weddell Aa 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.

Weddell Aa is frost-tender (hardy to USDA zone 11). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Weddell Aa can be propagated through division, back bulbs. Similar propagation techniques also apply to achala aa plant care, which shares the same genus.

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

Weddell Aa is susceptible to aphids, scale insects, 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.

Weddell Aa grows outdoors in USDA Zone 11b – 12b. It survives winters down to planting zone 11b. Weddell Aa is native to Brazil. In cooler regions, grow Weddell Aa as a houseplant or bring it indoors before the first frost.