Plant Library

Indoor Bonsai Tree Care Guide

Usually Ficus (ficus or 'ginseng ficus'); bonsai is a growing technique, not a species

By the Plantshop.com Editorial Team · Updated 6 Nov 2026 · How we research · Report an error

Buying an indoor bonsai tree? See where to buy it online, which size to choose and what to check on arrival →

Bonsai is a way of growing a tree, not a type of plant. The bonsai sold as indoor trees are almost always ficus, which handles room temperatures; juniper bonsai, also sold widely, is an outdoor tree that usually dies when kept inside.

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Light

As bright as possible: a south or west window, or a strong grow light. Rotate the pot every few weeks so growth stays even.

Water

When the top 1/2 in of soil is just dry; water until it drains. Always use a pot with drainage holes and empty the saucer after watering. Plants use far less water in winter.

Humidity and temperature

Humidity: average; higher helps. Most houseplants prefer 60-80°F (16-27°C) and dislike cold drafts and heating vents.

Soil and feeding

Use a well-draining potting mix with bark or perlite for air. Feed lightly in spring and summer with a balanced houseplant fertilizer at half strength; skip feeding in winter.

Our tip

Check the species on the label before you buy. Indoors, choose ficus; buy juniper only if it can live outside year-round.

Common problems

• Leaf drop after moving: Ficus hate change; pick a bright spot and leave it there.
• A juniper browning indoors: Junipers need outdoor seasons; move it outside.
• Soggy soil: Dense retail soil; repot into a gritty bonsai mix in spring.

Pets

Toxic to cats and dogs (ASPCA), according to the ASPCA plant list. If a pet chews it and shows symptoms, call your vet or the ASPCA Animal Poison Control Center. Check any plant in our Pet-Safe Plant Checker.