When to plant Winter Melon in Gilpin County, CO
Gilpin County's 135-day season only supports one Winter Melon planting per year. Sow between May 21 and June 11 for the best chance at full maturity before September 26.
When to Plant Winter Melon in Gilpin County, CO
Winter melon (wax gourd) is a large Asian squash with a waxy white coating that allows long storage. The mild flesh is used in soups and stir-fries.
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 Winter Melon to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Winter Melon successfully. Mulch heavily to conserve soil moisture.
Gilpin County Soil Profile
Soil Type
Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Winter Melon Planting Timeline — Gilpin County, CO
Winter Melon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 19 | Mar 19 – Apr 2 |
| Transplant Outdoors | May 28 | May 28 – Jun 11 |
| Direct Sow | May 21 | May 21 – Jun 11 |
| Harvest | August 27 | Aug 27 – Oct 15 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | Transplant Outdoors Direct Sow |
| July | — |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
90–120 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5b
📆 Growing Season
135 days in Gilpin County
Growing Tips for Gilpin County
Start seeds indoors 3-4 weeks early. Provide ample space for sprawling vines. Harvest when the waxy coating develops on the rind. Fruits can weigh 15-30 pounds.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Winter Melon in Other Locations
Frequently Asked Questions
When should I plant Winter Melon in Gilpin County, CO?
Gilpin County is in Zone 5b with an average last frost of May 14. Plan your Winter Melon 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 Winter Melon in Gilpin County, CO?
In Gilpin County, CO, plant Winter Melon 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 Winter Melon?
Gilpin County sits in USDA Zone 5b. Winter Melon grows reliably in zones 5a through 11b, so it's a good fit here.
Can Winter Melon grow in Gilpin County's climate?
Yes — Winter Melon 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.