When to Plant Chervil in Mineral County, CO
Chervil is a delicate herb with a subtle anise-parsley flavor, essential in French cuisine as part of fines herbes. It prefers cool conditions and partial shade.
Mineral County, Colorado is in USDA Zone 4a. The average last spring frost is June 10 and the first fall frost is September 13, giving you a growing season of approximately 95 days.
At an elevation of 7,809 feet, Mineral County receives approximately 12.8 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Chervil to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Chervil successfully. Mulch heavily to conserve soil moisture.
Mineral County Soil Profile
Soil Type
Loam
Soil pH
6.8-8
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Chervil Planting Timeline — Mineral County, CO
Chervil Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 29 | Apr 29 – May 13 |
| Transplant Outdoors | June 3 | Jun 3 – Jun 17 |
| Direct Sow | June 3 | Jun 3 – Jun 24 |
| Fall Sowing | June 21 | Jun 21 – Jul 5 |
| Harvest | July 15 | Jul 15 – Sep 16 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Start Indoors |
| June | Transplant Outdoors Direct Sow Fall Sowing |
| July | Fall Sowing Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Partial Shade (3-6 hours)
Water
Moderate — regular watering
Days to Maturity
40–60 days
Soil pH
6 – 7
USDA Zone
Zone 4a
Growing Season
95 days
Growing Tips for Mineral County
Direct sow in early spring or fall as chervil bolts in heat. Provide shade and cool conditions. Harvest outer leaves as needed; use fresh as it loses flavor when dried.
Companion Planting
Good Companions
Level Up Your Garden
Chervil in Other Locations
Frequently Asked Questions
When should I plant Chervil in Mineral County, CO?
Mineral County is in Zone 4a with an average last frost of June 10. Plan your Chervil planting based on this frost date — see the calendar above for exact timing.
What planting zone is Mineral County, CO?
Mineral County, Colorado is in USDA Hardiness Zone 4a. The average last spring frost is June 10 and first fall frost is September 13.
Plan Your Garden with Confidence
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