When should I plant Marigold in Zone 12a?

Start Marigold seeds indoors around Nov 20. Transplant outdoors after Jan 8. Expect first harvest around Feb 12.

What is the last frost date for Zone 12a?

The average last spring frost date for Zone 12a is Jan 1. The first fall frost averages Dec 31, giving a 364-day growing season.

Can I grow Marigold in Zone 12a?

Yes. Marigold needs 50 days to harvest. Zone 12a has a 364-day growing season, which is sufficient.

🏵️

🏵️ Growing Marigold in Zone 12a

Zone 12a has a year-round growing season. Marigold can be planted almost any time with proper planning. Last frost: Jan 1. First frost: Dec 31.

Planting Calendar

Indoor

Outdoor

Harvest

Nov 20Dec 31

Season: Jan 1 – Dec 31 (364 days)

Zone12a

Last FrostJan 1

First FrostDec 31

Season Length364 days

Days to Harvest50

SunFull Sun

Frost ToleranceNone

Spacing4/sqft (6" apart)

When to Plant Marigold in Zone 12a

Start Seeds Indoors: Nov 20

Start Marigold seeds indoors around Nov 20 (6 weeks before last frost). Optimal germination temperature: 75°F. Germinates in 5–10 days.

Transplant Outdoors: Jan 8

Transplant Marigold seedlings outdoors after Jan 8. Wait until soil temperature reaches 60°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Feb 12

First harvest approximately Feb 12 (~35 days from transplant). Continue harvesting until first frost (Dec 31).

Companion Planting

✅ Tomatoes✅ Peppers✅ Eggplant ✅ Squash✅ Cucumbers

❌ Beans❌ Cabbage

Marigold in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Plan Your Marigold Garden

Track Marigold from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Marigold Growing Guide