📍 Haiku, HI · Zone 12a · Last frost Thursday, January 1, 2026
✏️ ChangeWhen to Plant Chervil 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, December 4, 2025
Based on last frost Thursday, January 1, 2026 · Zone 12a
Pro tip: Sow Chervil directly outdoors 4 weeks before your last frost date.
🌿 Plant Details
☀️ Growing Requirements
☀️
Sun
Partial Shade (3-4 hours)
💧
Water
Moderate (1 inch/week)
↔️
Spacing
9" apart
🌱
Planting Depth
0.25" deep
Seeds typically germinate in 7-14 days
Ready to Plant Chervil in Haiku?
Get your seeds now so they're ready by Thursday, December 4, 2025.
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🤝 Good Companions
Full Companion Planting Guide for Chervil
See which plants help Chervil thrive, which to keep away, and raised bed layout tips →
🛠️ Supplies You'll Need
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🌾 Seed Saving Guide
🟢 EasyWhen to Harvest Seed
Harvest seed heads when dry and light tan — they shatter quickly.
Processing
Cut into a bag, dry briefly, shake to release needle-like seeds.
Seed Viability
Up to 2 years when stored cool, dark, and dry.
Pro Tip
Chervil is best sown fresh — seed viability drops significantly after 1 year.
Raised Bed Planting Guides
A 4×8 bed fits 56 plants of Chervil. See plant counts, spacing grids, and companion pairings for every bed size →
Frequently Asked Questions
When should I plant Chervil in Haiku, Hawaii? +
In Haiku (Zone 12a), direct sow Chervil outdoors around Thursday, December 4, 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 Chervil take to grow? +
Chervil typically matures in about 50 days from direct sowing. In Haiku, that means you can expect harvest around Thursday, December 4, 2025 plus 50 days.
Should I start Chervil indoors or direct sow in Hawaii? +
Chervil does best when direct sown outdoors. In Haiku, sow directly around Thursday, December 4, 2025.
📚 More Chervil Planting Guides
Other Plants for Haiku
Growing Chervil in Zone 12a
Chervil (Anthriscus cerefolium) is a popular garden vegetable. In Haiku, Hawaii, which is in USDA Hardiness Zone 12a, you should direct sow seeds around Thursday, December 4, 2025.
Your average last frost date is Thursday, January 1, 2026. Chervil grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.