When should I plant Koriander in Zone 9a?

Direct sow Koriander outdoors around Mar 6. Expect first harvest around Apr 5.

What is the last frost date for Zone 9a?

The average last spring frost date for Zone 9a is Mar 20. The first fall frost averages Nov 12, giving a 237-day growing season.

Can I grow Koriander in Zone 9a?

Yes. Koriander needs 30 days to harvest. Zone 9a has a 237-day growing season, which is sufficient. You can plant up to 14 successions.

🌿

🌿 Growing Koriander in Zone 9a

Zone 9a has warm winters and an extended growing season -- excellent for heat-loving crops like Koriander. Sidste frost: Mar 20. Første frost: Nov 12.

Planting Calendar

Outdoor

Harvest

Mar 6Nov 12

Season: Mar 20 – Nov 12 (237 dage) · Succession: plant every 2 weeks (up to 14x)

Zone9a

Sidste frostMar 20

Første frostNov 12

Sæson237 dage

Høst30 dage

SolHalvskygge

When to Plant Koriander in Zone 9a

Sow Seeds Outdoors: Mar 6

Direct sow Koriander seeds outdoors around Mar 6. Wait until soil temperature reaches 50F. Space plants at 4/m² (15cm afstand).

Harvest: Apr 5

First harvest approximately Apr 5 (~30 dage from planting). Continue harvesting until first frost (Nov 12).

Fall Planting: Oct 1

For a fall harvest, plant Koriander around Oct 1 (6 weeks before first frost).

Samdyrkning

✅ Tomater✅ Peberfrugter✅ Bønner✅ Ærter✅ Spinat

❌ Fennikel❌ Dild

Koriander 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 Garden Koriander

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

Start Free Koriander Growing Guide