When to plant Cumin in Gilpin County, CO
Gilpin County's climate puts the Cumin spring window between April 30 and May 21. time plantings around the expected last-frost window for best survival. A second sowing from July 18 to August 1 extends the harvest into fall.
When to Plant Cumin in Gilpin County, CO
Cumin is a warm-season annual herb whose seeds are one of the most widely used spices globally. It requires a long, hot growing season of 3-4 months.
Gilpin County, Colorado is in USDA Zone 5b. The average last spring frost is May 14 and the first fall frost is September 26, giving you a growing season of approximately 135 days.
At an elevation of 6,444 feet, Gilpin County receives approximately 18.6 inches of rainfall annually with predominantly loam soil. Summer highs average 81°F, so choose short-season varieties of Cumin to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Cumin successfully. Mulch heavily to conserve soil moisture.
Gilpin County Soil Profile
Soil Type
Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Cumin Planting Timeline — Gilpin County, CO
Cumin Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 9 | Apr 9 – Apr 23 |
| Transplant Outdoors | May 7 | May 7 – May 21 |
| Direct Sow | April 30 | Apr 30 – May 21 |
| Harvest | August 20 | Aug 20 – Oct 22 |
| Fall Sowing | July 18 | Jul 18 – Aug 1 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Fall Sowing |
| August | Fall Sowing Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
100–120 days
🧪 Soil pH
Needs 6–8 · Your soil: N/A
🗺️ USDA Zone
Zone 5b
📆 Growing Season
135 days in Gilpin County
Growing Tips for Gilpin County
Start seeds indoors 4 weeks before last frost. Transplant after all danger of frost. Harvest when seed heads turn brown. Requires consistent warmth for proper seed development.
Companion Planting
Good Companions
Avoid Planting Near
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Cumin in Other Locations
Frequently Asked Questions
When should I plant Cumin in Gilpin County, CO?
Gilpin County is in Zone 5b with an average last frost of May 14. Plan your Cumin planting based on this frost date — see the calendar above for exact timing.
What planting zone is Gilpin County, CO?
Gilpin County, Colorado is in USDA Hardiness Zone 5b. The average last spring frost is May 14 and first fall frost is September 26.
When should I plant Cumin in Gilpin County, CO?
In Gilpin County, CO, plant Cumin after the last frost (around May 14) and before the first frost (around September 26). Best results when soil holds above 50°F.
What growing zone is Gilpin County, CO for Cumin?
Gilpin County sits in USDA Zone 5b. Cumin grows reliably in zones 5a through 11b, so it's a good fit here.
Can Cumin grow in Gilpin County's climate?
Yes — Cumin grows well in Gilpin County's temperate climate. Gilpin County averages a 135-day frost-free season, with last frost around May 14 and first frost around September 26.
Your Gilpin County Garden Planner — Free
A 22-page printable planner built for Gilpin County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.