Lucky Bean (Castanospermum) Repotting: Keep the Beans Exposed!

Your thriving lucky bean (Castanospermum australe) needs repotting. The golden rule: keep the large seed "beans" exposed at the same depth.

Repotting Steps

1. Pot size: Only 2 inches wider in diameter than current pot
2. Depth: Plant at exact same soil level—beans stay visible
3. Why: Burying deeper smothers roots; the plant will pull itself deeper if it wants
4. Soil: Well-draining mix (2 parts potting soil : 1 part perlite)

Long-Term Reality Check

• This becomes an 80-foot rainforest tree in nature
• In a pot, growth is very slow
• Eventually, it needs tropical ground planting to reach potential
• Enjoy as a unique foliage plant for years—repot minimally

Care Reminders

• Bright, indirect light
• Water when top inch dry
• Fertilize lightly monthly in growing season
• Never let sit in water

Those exposed beans are the plant's energy reserve and identity. Keep them proud and visible!