Plant Library

Begonia Care Guide

Begonia spp. (incl. B. maculata, B. rex)

By the Plantshop.com Editorial Team · Updated 21 Oct 2026 · How we research · Report an error

Begonias cover a huge range: the polka-dot Begonia maculata, the patterned rex begonias and flowering types. For buying online, the cane-type maculata ('angel wing' / polka dot begonia) and rex begonias are the most common houseplants.

Light

Bright indirect light; no harsh midday sun. Rotate the pot every few weeks so growth stays even.

Water

When the top 1 in of soil is dry; never soggy. Always use a pot with drainage holes and empty the saucer after watering. Plants use far less water in winter.

Humidity and temperature

Humidity: medium to high; 50%+. 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

Use a light, airy mix and a pot that is only slightly bigger than the roots; begonias rot quickly in big, wet pots.

Common problems

• Crispy brown edges: Dry air or drying out too far; raise humidity.
• Powdery white film: Powdery mildew; improve air flow and avoid wet leaves.
• Collapsing stems at the soil: Root or stem rot from overwatering.

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.