Annual flower
Impatiens plant profile
Impatiens walleriana
An annual flower for partial sun.
Last updated .
When to plant
When to plant Impatiens
Start seeds indoors
10 weeks before your last spring frost to 6 weeks before your last spring frost
Transplant outdoors
at your last spring frost to 2 weeks after your last spring frost
Growing conditions
- Sun
- Partial sun
- Lifecycle
- Annual
- Spacing
- 8 to 10 in apart
Common problems
Watch for these
Also watch for: damping off, fungal blights, viruses.
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- Impatiens (HGIC 1166)
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: Impatience Plant (Impatiens species) entry
ASPCA Animal Poison Control Center. Supports pet-safety verdicts for dogs and cats. Checked 2026-07-18.