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When to Plant Mâche in Haiku, Hawaii (96708)

Location

Haiku, Hawaii

ZIP Code

96708

USDA Zone

12a

Last Frost

Thursday, January 1, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Thursday, November 20, 2025

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

Pro tip: Sow Mâche directly outdoors 6 weeks before your last frost date.

🌿 Plant Details

Scientific Name Valerianella locusta
Days to Maturity 45 days
Mature Height 4-8"
Spread 4"

☀️ Growing Requirements

☀️

Sun

Partial Shade to Full Sun

💧

Water

Moderate (1 inch/week)

↔️

Spacing

4" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 7-14 days

Ready to Plant Mâche in Haiku?

Get your seeds now so they're ready by Thursday, November 20, 2025.

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🤝 Good Companions

RadishCarrotBeet
🤝

Full Companion Planting Guide for Mâche

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

🛠️ Supplies You'll Need

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🌾 Seed Saving Guide

🟢 Easy
✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Allow plants to flower and seed pods to dry on the plant.

Processing

Thresh dried plants over a bowl, separate seeds from chaff by winnowing.

Seed Viability

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

Pro Tip

Mâche self-sows freely — allow some plants to go to seed in place for a perpetual crop.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 9 per sq ft of Mâche. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Mâche in Haiku, Hawaii? +

In Haiku (Zone 12a), direct sow Mâche outdoors around Thursday, November 20, 2025.

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 Mâche take to grow? +

Mâche typically matures in about 45 days from direct sowing. In Haiku, that means you can expect harvest around Thursday, November 20, 2025 plus 45 days.

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

Mâche does best when direct sown outdoors. In Haiku, sow directly around Thursday, November 20, 2025.

Other Plants for Haiku

Growing Mâche in Zone 12a

Mâche (Valerianella locusta) is a popular garden vegetable. In Haiku, Hawaii, which is in USDA Hardiness Zone 12a, you should direct sow seeds around Thursday, November 20, 2025.

Your average last frost date is Thursday, January 1, 2026. Mâche grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.