When to Plant Eggplant in Honolulu, Hawaii (96821)

Location

Honolulu, Hawaii

ZIP Code

96821

USDA Zone

12b

Last Frost

Thursday, January 1, 2026

📅 Planting Calendar

Start Seeds Indoors Thursday, November 6, 2025

Transplant Outdoors Thursday, January 15, 2026

Pro Tip: Start Eggplant seeds indoors 8 weeks before your last frost date, then transplant outdoors around Thursday, January 15, 2026.

🌿 Plant Details

Scientific Name Solanum melongena

Days to Maturity 70 days

Mature Height 24-36"

Spread 24"

Type Bush

Fruit Size Medium (4-8 inches)

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1 inch/week)

↔️

Spacing

24" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Eggplant in Honolulu?

Get your seeds now so they're ready by Thursday, November 6, 2025.

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🤝 Good Companions

BeanPepperSpinachThyme

⚠️ Avoid Planting Near

Fennel

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Growing Eggplant in Zone 12b

Eggplant (Solanum melongena) is a popular garden vegetable. In Honolulu, Hawaii, which is in USDA Hardiness Zone 12b, you should start seeds indoors around Thursday, November 6, 2025.

Your average last frost date is Thursday, January 1, 2026. Plan to transplant your Eggplant seedlings outdoors around Thursday, January 15, 2026, about 2 weeks after your last frost date.