Do begonias need direct sun?

Most prefer bright, indirect light to avoid leaf scorch.

How often should I water?

Water when the top inch of soil feels dry to the touch.

Plant guide

Begonia.

Begonia

Pronounced bih-GOH-nee-uh

Also known as Begonia, Begonias

Begonia × semperflorens-cultorum — Photo by Laura Cunningham (CC BY) via iNaturalist

Begonias are a diverse group of plants known for their stunning foliage and delicate flowers. They thrive in warm, humid environments and make excellent additions to indoor collections or shaded garden beds. With so many varieties, you're sure to find one that fits your space perfectly.

Another photo of Begonia — Photo by Gabriel Fernandes (CC BY) via iNaturalist

At a glance

Care level: Moderate
Plant type: Herbaceous perennial.
Light: Partial shade to bright indirect light.
Indoor light: Bright indirect
Water: Every 5 to 10 days
Mature size: Varies by species, typically 15 to 60 centimeters.
Growth rate: Medium
Hardiness: USDA 10 to 12
Bloom time: Spring to autumn

Care

Keep the soil consistently moist but never soggy to prevent root rot. Watch for drooping leaves, which often signal a need for more water, or yellowing leaves, which may indicate overwatering. Provide plenty of indirect light to keep your plant happy and vibrant.

Watering: Water when the top centimeter of soil feels dry to the touch.
Feeding: Use a balanced liquid fertilizer diluted to half strength during the growing season.
Pruning: Pinch back stems to encourage bushier growth and remove faded flowers.
Repotting: Repot in spring when the plant becomes root bound.
Soil: Well draining, peat based potting mix.
Soil pH: Slightly acidic, 5.5 to 6.5.
Temperature: 15 to 25°C
Humidity: 50 to 80%
Drought tolerance: Low
Lifespan: Perennial, typically 3 to 5 years in cultivation.
Deer and rabbits: Moderate

Signs it needs repotting

Roots growing out of the drainage holes.
Water running straight through the pot without soaking in.
Stunted growth during the active season.

Safety

People: The plant is toxic to humans and pets if consumed, causing burning sensations and vomiting.
Pets: Begonias are toxic to cats and dogs if ingested, as they contain soluble calcium oxalates.
Children: Keep this plant away from small children as ingestion of leaves or stems can cause immediate oral pain and swelling.
Contact allergens: The sap can cause mild skin irritation in sensitive individuals.
Airborne allergens: There are no notable respiratory allergens associated with this plant.
Edibility: Begonias contain soluble oxalates that can cause mouth irritation and kidney damage if ingested in large quantities.

How to identify it

Asymmetrical leaf shapes
Succulent stems
Diverse leaf patterns and colors
Small, often clustered flowers

Height: 0.15 to 0.6m
Spread: 0.2 to 0.5m
Leaves: green, bronze, red, silver, deciduous
Flowers: pink, red, white, yellow, 2 to 8cm

Problems to watch for

MealybugsCommon
Powdery MildewCommon
Botrytis BlightUncommon
Fungus GnatsUncommon
Root RotUncommon
ThripsUncommon

By symptom

Check your begonia from a photo

Pocket Botanist looks at a photo of your plant and tells you what's wrong and what to try first.

Growing it

Propagation: cuttings, seed, division
When to plant: spring
Overwintering: Bring containers indoors before the first frost. Reduce watering during the winter months as growth slows down.
In containers: Begonias grow very well in containers, provided the pot has excellent drainage and is at least 15 cm wide.

Stem Cuttings

1. Cut a healthy stem with at least two nodes.
2. Remove lower leaves.
3. Place in moist potting mix or water until roots form.

Group shade loving plants together to create a microclimate that traps moisture.

Grows well with

Ferns — They share similar requirements for shade and moisture.
Impatiens — These plants provide a beautiful color contrast in shaded garden beds.

Similar species

Rex Begonia — Grown primarily for its stunning, patterned foliage.
Wax Begonia — Known for its waxy leaves and continuous blooming habit.

Science

Family: Begoniaceae
Genus: Begonia
Order: Cucurbitales
Class: Magnoliopsida
Native range: Tropical and subtropical regions of the Americas, Africa, and Asia.
Conservation: Not of conservation concern.

They thrive in the dappled light of forest floors where humidity is consistently high.

Value to wildlife: nectar source
Pollinators: bees, butterflies
Uses: container plant, indoor accent, shaded border

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Nutrients: 5/9
Salinity: 2/9
Moisture: 6/9
Soil reaction: 5/9
Light: 4/9
Temperature: 8/9

Taxonomy resolved against GBIF.

Questions people ask

Do begonias need direct sun?: Most prefer bright, indirect light to avoid leaf scorch.
How often should I water?: Water when the top inch of soil feels dry to the touch.

Where the name comes from

The genus was named by Charles Plumier to honor Michel Bégon, a French diplomat and plant enthusiast.

Good to know

Begonias are one of the most popular houseplant groups globally.
Some species have leaves that are asymmetrical.
They are native to tropical and subtropical regions.

Also in

Keep your begonia growing

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This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.