Annual flower
Wax Begonia plant profile
Begonia semperflorens
An annual flower for full sun.
Last updated .
When to plant
When to plant Wax Begonia
Start seeds indoors
12 weeks before your last spring frost
Transplant outdoors
at your last spring frost to 2 weeks after your last spring frost
Growing conditions
- Sun
- Full sun
- Lifecycle
- Annual
- Spacing
- 6 to 8 in apart
Common problems
Watch for these
Also watch for: botrytis blight, stem rot, pythium root rot, mealybugs, snails.
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- Begonia (HGIC 1159)
Clemson Cooperative Extension, Home & Garden Information Center. Supports indoor seed-starting timing (normalized) and outdoor transplant timing (normalized). Checked 2026-06-18.
- Toxic and Non-Toxic Plants: Begonia (Begonia species) entry
ASPCA Animal Poison Control Center. Supports pet-safety verdicts for dogs and cats. Checked 2026-07-18.