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🍉 Growing Watermelon in Zone 8b

Zone 8b has warm winters and an extended growing season — excellent for heat-loving crops like Watermelon. Last frost: Mar 22. First frost: Nov 10.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 22Nov 10

Season: Mar 22 – Nov 10 (233 days)

Zone8b

Last FrostMar 22

First FrostNov 10

Season Length233 days

Days to Harvest90

SunFull Sun

Frost ToleranceNone

Spacing1/sqft (12" apart)

When to Plant Watermelon in Zone 8b

Start Seeds Indoors: Feb 22

Start Watermelon seeds indoors around Feb 22 (4 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 4–12 days.

Transplant Outdoors: Apr 5

Transplant Watermelon seedlings outdoors after Apr 5. Wait until soil temperature reaches 70°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: Jun 19

First harvest approximately Jun 19 (~75 days from transplant). Continue harvesting until first frost (Nov 10).

Companion Planting

✅ Corn✅ Nasturtiums✅ Marigolds✅ Radishes

❌ Potatoes❌ Cucumbers

Watermelon 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

Frequently Asked Questions

When should I plant Watermelon in Zone 8b?

Start Watermelon seeds indoors around Feb 22. Transplant outdoors after Apr 5. Expect first harvest around Jun 19.

What is the last frost date for Zone 8b?

The average last spring frost date for Zone 8b is Mar 22. The first fall frost averages Nov 10, giving a 233-day growing season.

Can I grow Watermelon in Zone 8b?

Yes. Watermelon needs 90 days to harvest. Zone 8b has a 233-day growing season, which is sufficient.

What is the best month to plant Watermelon in Zone 8b?

The best time to start Watermelon in Zone 8b is Feb. Begin seeds indoors around Feb 22, then transplant outdoors after the last frost date of Mar 22.

What companion plants grow well with Watermelon?

Good companion plants for Watermelon include Corn, Nasturtiums, Marigolds, Radishes. Avoid planting Watermelon near Potatoes, Cucumbers.

How long does Watermelon take to harvest?

Watermelon takes approximately 90 days from planting to harvest. In Zone 8b, expect your first harvest around Jun 19.

Plan Your Watermelon Garden

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

Start Free Watermelon Growing Guide