Begonia Care Guide - Light, Water, Soil & Expert Tips

Your Begonia is a Sassy plant that comes in so many forms it is almost a genus of contradictions - Rex Begonias for their swirling, metallic foliage, angel wing Begonias for their graceful spotted leaves and dangling flowers, and dozens more. What they all share is a love of bright light, good drainage, and just the right amount of moisture. This begonia care guide covers the essentials that apply across the family.

Light

Begonias love bright indirect light. Most varieties perform best near east or west-facing windows where they get plenty of light without harsh midday sun. Rex Begonias can tolerate slightly lower light than flowering types, but all Begonias need decent brightness to look their best.

Direct afternoon sun will scorch the leaves, especially the delicate Rex varieties. Morning sun is generally fine and even beneficial for flowering types.

Watering

Water your Begonia every 8 days in summer and every 12 days in winter. Let the top 2-3 cm of soil dry between waterings. Begonias are prone to rot if overwatered, so err on the side of slightly dry.

Critical tip: water the soil, not the leaves. Begonia leaves are prone to fungal issues when they stay wet. Bottom watering - placing the pot in a tray of water and letting it soak up - is an excellent technique for Begonias.

Overwatering signs: mushy stems, yellowing leaves, powdery mildew. Underwatering signs: crispy leaf edges, drooping.

Humidity

Begonias appreciate moderate to high humidity (50-70%) but here is the catch - they hate wet leaves. This means misting is not ideal. Instead, use a pebble tray or humidifier to raise humidity around the plant without wetting the foliage directly.

Good air circulation also matters. Stagnant, humid air encourages the fungal issues that Begonias are prone to.

Soil & Potting

Begonias prefer a compact pot - slightly rootbound is ideal. Use a light, well-draining mix with plenty of perlite. Standard potting soil mixed with an equal amount of perlite works well. The mix should feel airy, not dense.

Ensure the pot has drainage holes. Begonias cannot sit in wet soil without developing rot. Repot every 1-2 years in spring, sizing up only slightly.

Common Problems

Powdery mildew: A white, powdery coating on leaves. Caused by poor air circulation and wet foliage. Improve airflow, stop misting leaves, and treat with a fungicide if needed.

Stem rot: Mushy, blackening stems at the soil line. This is caused by overwatering or soil that stays too wet. Remove affected parts and let the soil dry before watering again.

Leggy growth: Not enough light. Move to a brighter spot. Pinch back leggy stems to encourage bushier growth.

Leaf drop: Can be caused by cold drafts, overwatering, or sudden environmental changes. Begonias like stability.

Toxicity

Begonias are mildly toxic to cats and dogs. The roots are the most toxic part. Ingestion can cause mouth irritation and vomiting. Keep out of reach of pets.

Quick Reference

Why Begonia Belongs in Your Collection

Whether you choose a Rex for its swirling metallic foliage or an angel wing for its spotted leaves and dangling flowers, Begonias offer a level of visual interest that few plants can match. With this begonia care guide and LeafLovers helping you track watering and seasonal adjustments, your Begonia will keep delivering that sassy, show-stopping beauty.