When should I plant Corn in Zone 9a?

Direct sow Corn outdoors around Mar 27. Harvest around Jun 20.

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.

Yes. Corn needs 85 days to harvest. Zone 9a has a 237-day growing season, which is sufficient. You can plant up to 10 successions.

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Zone 9a has warm winters and an extended growing season — excellent for heat-loving crops like Corn. Last frost: Mar 20. First frost: Nov 12.

Outdoor

Harvest

Mar 27Nov 12

Season: Mar 20 – Nov 12 (237 days) · Succession: plant every 2 weeks (up to 10x)

Zone9a

Last FrostMar 20

First FrostNov 12

Season Length237 days

Days to Harvest85

SunFull Sun

Frost ToleranceNone

Spacing4/sqft (6" apart)

Direct sow Corn seeds outdoors around Mar 27. Soil temperature should be at least 60°F. Space at 4/sqft (6" apart).

First harvest approximately Jun 20 (~85 days from planting). Continue harvesting until first frost (Nov 12).

✅ Beans✅ Squash✅ Cucumbers✅ Peas✅ Pumpkins

❌ Tomatoes

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

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