Calendula (Pot Marigold) plant profile
Calendula officinalis
An annual flower for full sun.
Last updated .
When to plant
When to plant Calendula (Pot Marigold)
Calendula is a cool-season annual. USU directs sowing seed once the soil reaches 60 F, and setting out transplants after the danger of frost has passed. Where summers are mild it can also be sown in late summer for fall bloom.
The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.
Open Calendula (Pot Marigold) in my garden calendarShows the source-backed planting season, not frost-adjusted dates.
Growing conditions
- Sun
- Full sun
- Water
- 1 in / week
- Planting depth
- 0.25 in
- Soil pH
- 6 to 7
- Lifecycle
- Annual
- Spacing
- 8 to 12 in apart
Common problems
Watch for these
Also watch for: whiteflies, self seeding.
Companion planting
What to grow nearby
Good companions
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- How to Grow Calendula in Your Garden
Utah State University Extension. Supports general reference. Checked 2026-06-13.
- Toxic and Non-Toxic Plants: Pot Marigold (Calendula officinalis) entry
ASPCA Animal Poison Control Center. Supports pet-safety verdicts for dogs and cats. Checked 2026-07-18.