How to care for: Castanospermum Australe

The Castano originates from Australia. Not surprising for a plant officially called the Castanospermum Australe. Or as we prefer to call him, the Australian chestnut. The best thing about the Castano is that the plant grows out of chestnuts. These chestnuts rise above the soil, which creates a nice look. In nature, the trees grow up to 15 metres high.

Bright light

Water once a week


Non Air-purifying

How do you take care of a Castano?


The Castano likes to be positioned on a bright location. A south-facing window, which is too bright for most plants, is perfect for the Castano. Despite the fact that the plant likes to be on a very bright locationn, partial shade is not a problem. The most important thing is that the location is not below 10 degrees.


A Castano needs water at least once a week. In summer it is best to water the plant twice a week, but only small amounts of water. Make sure that the water can drain away well. Otherwise, water will remain in the bottom of the flowerpot and your Castano may suffer from root rot. In the winter, some water once a week is enough.

Plant nutrition

The Castano uses extra energy from spring onwards to make new leaves. As a result, the plant needs extra nutrients. You can provide these nutrients by plant nutrition. We recommend giving plant nutrition once a month. From spring until autumn. After autumn and in winter it is better not to give extra nutrients. In the autumn, plant nutrition can actually be harmful for the Castano!


Repotting the Castano is necessary every 2 years. We recommend repotting the Castano immediately after purchase. Repotting the plant every 2 years gives it new nutrients and more room for root growth. The airier soil is also very good for the water flowing through. The best period to repot is spring.


The Castano is not known for its air-purifying function. As far as we’re concerned, no problem.

Is a Castano toxic?

The Castano itself is not poisonous but the chestnut from which the plant grows is poisonous. Therefore, pay close attention to pets.

Diseases and peculiarities

The Castano is not excessively susceptible to diseases and pests. Should the plant still suffer from pests, then you can use pesticide. Although pesticide can mean the end of the plant. Therefore, be careful.

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