Calendula illustration

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

Planting Dates by Zone

Zone 1aZone 1bZone 2aZone 2bZone 3aZone 3bZone 4aZone 4bZone 5aZone 5bZone 6aZone 6bZone 7aZone 7bZone 8aZone 8bZone 9aZone 9bZone 10aZone 10bZone 11aZone 11bZone 12aZone 12bZone 13aZone 13b

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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