Growing Castanospermum Australe (Australian Bean Tree) Indoors

Growing Castanospermum Australe (Australian Bean Tree) Indoors

Castanospermum australe, often sold as "Aussie Bean Ball Tree," is a sun‑loving tree that struggles in typical indoor conditions. Yellowing leaves after a month usually indicate insufficient light and/or overwatering.

Light Is Critical

This species needs direct sunlight for most of the day. Place it right in front of a large south‑ or west‑facing window. No amount of fertilizer or water can compensate for low light.

Watering Adjustments

In lower light, the plant uses less water. Allow the top inch of soil to dry before watering. Overwatering in dim conditions quickly leads to root rot.

Fertilizer

Hold off on fertilizer until the plant is in strong light and actively growing. The initial dose you applied may have contributed to stress if the roots weren't absorbing it.

With a sunny window and careful watering, your Australian bean tree can become a striking indoor specimen.