Castanospermum (Indoor Chestnut): Care At Home

Peculiarities of a plant such as Chestnut(castanospermum) are two large seedpods, which are very similar to the fruit of the chestnut. From these seedpods rises a shoot of the plant itself.

In nature, castanospermum, sometimes called chestnut spermum, is found in Australia. In its native land, it is also known as the Moreton Coast Chestnut and also as the Black Bean. It is called Castanospermum austarale because of its very bright, large fruits, which ripen in long pods.

Only one species, called Castanospermum austarale, is cultivated at home. It should be noted that it is the only species of this genus. It is directly related to the family of legumes and is not a chestnut, although it bears some resemblance.

The domestic chestnut, like most members of the legume family, is capable of fixing atmospheric nitrogen.

In wild conditions this plant is found in rainy, wet forests on the east coast of Australia.

When keeping it at home it is essential to take this into account, namely that castanospermum needs heat, high humidity and plenty of sunlight all year round.

In nature this plant is an evergreen tree, which can reach a height of 10 meters. But it is much smaller when grown as a houseplant.

If you decide to grow indoor chestnut in your home, then you should definitely remember the fact that it contains a large amount of poisonous substances such as saponins. It is therefore necessary to keep this plant out of the reach of small children and pets.

It is interesting to know that the aborigines of Australia eat the seeds of castanospermum, despite the fact that they contain poison. In order to neutralize the poison, they cut the seeds in two halves, then soak and boil them for a long time.

Chestnut can I grow at home? An unusual indoor plant on your windowsill

Castanospermum care at home

Castanospermum (Indoor Chestnut): Care at Home

Temperature regime

The plant needs warmth all year round. You will feel best at temperatures between 16 and 23 degrees. In winter the temperature in the room where the indoor chestnut is located must not fall below 16 degrees.


It feels best in slight penumbra but you must protect it from direct sun rays.

How to water

In warm seasons water abundantly but make sure the liquid does not stagnate in the soil. Water should only be used at room temperature. During the cold season watering should be moderate. At the same time, it should be carried out as the substrate dries up.

In winter time, the plant needs regular spraying. For this purpose, take well-drained lukewarm water.

Earth mixture

Castanospermum (Indoor Chestnut): Care at Home

Suitable earth should be loose and of neutral acidity. To prepare a suitable earth mixture, combine leaf, sod and compost soil and coarse sand, which should be taken in equal proportions. It is also recommended to pour in some lumps of clay and brick crumbs.

Do not forget a good drainage layer.


Fertilize the room chestnut year-round once every 2 weeks. Organic fertilizers are used for this.

Transplanting the castanospermum

Castanospermum (Indoor Chestnut): Care at Home

After the grown castanospermum has used all the useful substances that are in the seedpods, you will need to transplant into a larger size pot. When transplanting, you should not forget that the room chestnut has very powerful roots.

Raturation of the castanospermum

Castanospermum (Indoor Chestnut): Care at Home

Rativation of this plant can be done by seeds. Before sowing, the seeds are immersed in warm water for 24 hours. Then they are germinated by maintaining a constant temperature of 18 to 25 degrees.

In room conditions, the tree does not flower.

Pests and diseases

Castanospermum (Indoor Chestnut): Care at Home

The plant may have mealybugs, thrips, spider mites or scales.

Mistakable problems with the cultivation of the indoor chestnut include:

  1. Pale coloration of the leaves--the plant lacks light.
  2. Growth slows down-needs additional nutrition.
  3. Dry leaf tips-Too dry air, need more sprinkling.
  4. Yellowing of leaves in summer-intensive light.
  5. Leaves wilting and falling off in winter time- very cold in room.

Chestnut or House Chestnut / Care of Indoor Plants


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