When to Plant Oregano in Haiku, Hawaii (96708)

Location

Haiku, Hawaii

ZIP Code

96708

USDA Zone

12a

Last Frost

Thursday, January 1, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Thursday, November 6, 2025

Transplant Outdoors

Thursday, January 15, 2026

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

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

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🌿 Plant Details

Scientific Name Origanum vulgare

Days to Maturity 80 days

Mature Height 12-24"

Spread 18"

Type Spreading

Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Full Sun (6+ hours)

💧

Water

Low to Moderate

↔️

Spacing

12" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 7-14 days

Ready to Plant Oregano in Haiku?

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

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🤝 Good Companions

PepperTomatoBasil

🤝

Full Companion Planting Guide for Oregano

See which plants help Oregano 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

* Affiliate links — we may earn a small commission at no extra cost to you.

🌾 Seed Saving Guide

🟢 Easy

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Let flower clusters dry fully on the plant — tiny seeds form in dried calyxes.

Processing

Strip dried clusters, rub between fingers over a bowl, winnow lightly to remove chaff.

Seed Viability

Up to 3 years when stored cool, dark, and dry.

Pro Tip

Greek oregano from seed may vary in flavor intensity. Propagate by cuttings for culinary consistency.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 32 plants of Oregano. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Oregano in Haiku, Hawaii? +

In Haiku (Zone 12a), start Oregano seeds indoors around Thursday, November 6, 2025 and transplant outdoors around Thursday, January 15, 2026.

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

The average last spring frost date for Haiku, Hawaii (ZIP 96708) is around Thursday, January 1, 2026. This is based on NOAA climate normals for USDA Zone 12a.

How long does Oregano take to grow? +

Oregano typically matures in about 80 days from transplanting. In Haiku, that means you can expect harvest around Thursday, January 15, 2026 plus 80 days.

Should I start Oregano indoors or direct sow in Hawaii? +

Oregano should be started indoors 8 weeks before your last frost date. In Haiku, that means starting around Thursday, November 6, 2025.

📚 More Oregano Planting Guides

🗺️

Oregano in Hawaii

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 12a Oregano Guide

All cities in your zone · Avg dates

→

Other Plants for Haiku

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Growing Oregano in Zone 12a

Oregano (Origanum vulgare) is a popular garden vegetable. In Haiku, Hawaii, which is in USDA Hardiness Zone 12a, you should start seeds indoors around Thursday, November 6, 2025.

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