Calendula Growing Guide
Asteraceae family
Days to Harvest55 days
SunlightFull Sun
Frost ToleranceModerate
Spacing12/sqft
Germination7-14 days
HardinessHardy
Germ. Temp65°F
Start Indoors6 weeks before last frost
Growth Stages
- Seedling
- Establishing
- Budding
- Blooming
Planting Dates by Zone
| Zone | Start Indoors | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 1a | Apr 13 | May 11 | May 11 | Jun 20 |
| Zone 1b | Apr 13 | May 11 | May 11 | Jun 20 |
| Zone 2a | Apr 3 | May 1 | May 1 | Jun 10 |
| Zone 2b | Apr 13 | May 11 | May 11 | Jun 20 |
| Zone 3a | Apr 10 | May 8 | May 8 | Jun 17 |
| Zone 3b | Apr 3 | May 1 | May 1 | Jun 10 |
| Zone 4a | Mar 24 | Apr 21 | Apr 21 | May 31 |
| Zone 4b | Mar 20 | Apr 17 | Apr 17 | May 27 |
| Zone 5a | Mar 17 | Apr 14 | Apr 14 | May 24 |
| Zone 5b | Mar 17 | Apr 14 | Apr 14 | May 24 |
| Zone 6a | Mar 17 | Apr 14 | Apr 14 | May 24 |
| Zone 6b | Mar 4 | Apr 1 | Apr 1 | May 11 |
| Zone 7a | Mar 4 | Apr 1 | Apr 1 | May 11 |
| Zone 7b | Feb 27 | Mar 27 | Mar 27 | May 6 |
| Zone 8a | Feb 22 | Mar 22 | Mar 22 | May 1 |
| Zone 8b | Feb 8 | Mar 8 | Mar 8 | Apr 17 |
| Zone 9a | Feb 6 | Mar 6 | Mar 6 | Apr 15 |
| Zone 9b | Jan 27 | Feb 24 | Feb 24 | Apr 5 |
| Zone 10a | Jan 9 | Feb 6 | Feb 6 | Mar 18 |
| Zone 10b | Dec 17 | Jan 14 | Jan 14 | Feb 23 |
| Zone 11a | Dec 17 | Jan 14 | Jan 14 | Feb 23 |
| Zone 11b | Dec 4 | Jan 1 | Jan 1 | Feb 10 |
| Zone 12a | Nov 20 | Dec 18 | Dec 18 | Jan 27 |
| Zone 12b | Nov 20 | Dec 18 | Dec 18 | Jan 27 |
| Zone 13a | Nov 20 | Dec 18 | Dec 18 | Jan 27 |
| Zone 13b | Nov 20 | Dec 18 | Dec 18 | Jan 27 |
Frequently Asked Questions
How long does it take to grow Calendula?
Calendula takes approximately 55 days from planting to harvest.
How much sun does Calendula need?
Calendula requires full sun (6+ hours direct sunlight per day).
How far apart should I plant Calendula?
Plant Calendula at 12/sqft using square foot gardening spacing.
Can Calendula survive frost?
Calendula is tolerant of moderate frost.
How long does Calendula take to germinate?
Calendula seeds germinate in 7-14 days at an optimal temperature of 65°F.
When should I start Calendula seeds indoors?
Start Calendula seeds indoors 6 weeks before your last frost date, then transplant -2 weeks after last frost.
Plan Your Calendula Garden
Track Calendula from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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