Growing Calendula in Zone 3B

Calendula (pot marigold) is a cool-season flower with medicinal properties and cheerful blooms.

Zone 3B has a short growing season — start seeds indoors when possible and use season-extending techniques like cold frames and row covers.

Top Growing Tips

• Prefers cool weather — blooms best in spring and fall
• Self-seeds prolifically — you’ll have it forever after one planting
• Petals are edible — use as ‘poor man’s saffron’ in cooking
• Attracts beneficial insects including hoverflies and lacewings
• Used in herbal salves and skin care for centuries

Companion Planting

Good companions: tomatoes, asparagus, virtually everything

Avoid planting near: none — calendula is a universal garden friend

Harvest Timeline

Flowering in 45-60 days from seed; harvest when fully open

About Zone 3B

USDA Hardiness Zone 3B has an average last spring frost around May 15 and first fall frost around Sep 15. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.