When to Plant Cayenne Pepper in Honolulu, Hawaii (96813)

Location

Honolulu, Hawaii

ZIP Code

96813

USDA Zone

12b

Last Frost

Thursday, January 1, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Thursday, October 23, 2025

Transplant Outdoors

Thursday, January 15, 2026

Based on last frost Thursday, January 1, 2026 · Zone 12b

Pro tip: Start Cayenne Pepper seeds indoors 10 weeks before your last frost date, then transplant outdoors around Thursday, January 15, 2026.

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🌿 Plant Details

Scientific Name Capsicum annuum

Days to Maturity 75 days

Mature Height 24-36"

Spread 18"

Type Bush

Fruit Size Small (2-5 inch pods)

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Cayenne Pepper in Honolulu?

Get your seeds now so they're ready by Thursday, October 23, 2025.

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🤝 Good Companions

BasilCarrotTomato

⚠️ Avoid Planting Near

Fennel

🤝

Full Companion Planting Guide for Cayenne Pepper

See which plants help Cayenne Pepper thrive, which to keep away, and raised bed layout tips →

🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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Common Cayenne Pepper Varieties

Popular cultivars to look for at your local nursery or seed supplier.

Ring of Fire

open-pollinated 60d

Hot, thin-walled cayenne that matures early and dries beautifully for flakes and powder.

Long Slim Cayenne

open-pollinated 70d

Classic 5–6 inch thin pepper with classic cayenne heat; great fresh or dried.

Golden Cayenne

open-pollinated 70d

Yellow version of the classic cayenne; slightly milder with a fruity undertone.

🌾 Seed Saving Guide

🟡 Moderate

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Let peppers ripen fully red before collecting seeds.

Processing

Cut open ripe peppers, carefully remove seeds, spread to dry 1–2 weeks. Wear gloves.

Seed Viability

Up to 2 years when stored cool, dark, and dry.

Pro Tip

Crosses with all Capsicum annuum peppers (bell, jalapeño, etc.). Isolate by 300 feet for pure seed.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 14 plants of Cayenne Pepper. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Cayenne Pepper in Honolulu, Hawaii? +

In Honolulu (Zone 12b), start Cayenne Pepper seeds indoors around Thursday, October 23, 2025 and transplant outdoors around Thursday, January 15, 2026.

What is the last frost date for Honolulu, Hawaii? +

The average last spring frost date for Honolulu, Hawaii (ZIP 96813) is around Thursday, January 1, 2026. This is based on NOAA climate normals for USDA Zone 12b.

How long does Cayenne Pepper take to grow? +

Cayenne Pepper typically matures in about 75 days from transplanting. In Honolulu, that means you can expect harvest around Thursday, January 15, 2026 plus 75 days.

Should I start Cayenne Pepper indoors or direct sow in Hawaii? +

Cayenne Pepper should be started indoors 10 weeks before your last frost date. In Honolulu, that means starting around Thursday, October 23, 2025.

📚 More Cayenne Pepper Planting Guides

🗺️

Cayenne Pepper in Hawaii

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 12b Cayenne Pepper Guide

All cities in your zone · Avg dates

→

Other Plants for Honolulu

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Growing Cayenne Pepper in Zone 12b

Cayenne Pepper (Capsicum annuum) is a popular garden vegetable. In Honolulu, Hawaii, which is in USDA Hardiness Zone 12b, you should start seeds indoors around Thursday, October 23, 2025.

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