Celosia (Woolflower) plant profile
Celosia argentea
An annual flower for full sun.
Last updated .
When to plant
When to plant Celosia (Woolflower)
Celosia is a warm-season annual. UMN says to wait until the soil warms above 55 F before planting out, which is after the last spring frost. To start indoors, sow about 10 weeks before that outdoor planting date.
The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.
Open Celosia (Woolflower) in my garden calendarShows the source-backed planting season, not frost-adjusted dates.
Growing conditions
- Sun
- Full sun
- Planting depth
- 0.25 in
- Soil pH
- 6 to 6.5
- Lifecycle
- Annual
- Spacing
- 8 to 12 in apart
Common problems
Watch for these
Also watch for: damping off, needs staking when tall, overwatering rot.
Next steps
Continue with Celosia (Woolflower)
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- Celosia
University of Minnesota Extension. Supports general reference. Checked 2026-06-13.
- Toxic and Non-Toxic Plants: Cockscomb (Celosia plumosa) entry
ASPCA Animal Poison Control Center. Supports pet-safety verdicts for dogs and cats. Checked 2026-07-18.