When should I plant Corn in Zone 9b?

Direct sow Corn outdoors around Mar 17. Harvest around Jun 10.

What is the last frost date for Zone 9b?

The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.

Yes. Corn needs 85 days to harvest. Zone 9b has a 250-day growing season, which is sufficient. You can plant up to 11 successions.

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Zone 9b has warm winters and an extended growing season — excellent for heat-loving crops like Corn. Last frost: Mar 10. First frost: Nov 15.

Outdoor

Harvest

Mar 17Nov 15

Season: Mar 10 – Nov 15 (250 days) · Succession: plant every 2 weeks (up to 11x)

Zone9b

Last FrostMar 10

First FrostNov 15

Season Length250 days

Days to Harvest85

SunFull Sun

Frost ToleranceNone

Spacing4/sqft (6" apart)

Direct sow Corn seeds outdoors around Mar 17. Soil temperature should be at least 60°F. Space at 4/sqft (6" apart).

First harvest approximately Jun 10 (~85 days from planting). Continue harvesting until first frost (Nov 15).

✅ 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.