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When to Plant Kabocha in Uinta County, WY

Kabocha is a Japanese winter squash with an exceptionally sweet, dense, chestnut-like flesh and dark green skin. It is a favorite in Asian cuisine for its rich, dry texture.

Uinta County, Wyoming is in USDA Zone 4b. The average last spring frost is June 17 and the first fall frost is August 31, giving you a growing season of approximately 75 days.

At an elevation of 5,768 feet, Uinta County receives approximately 23.5 inches of rainfall annually with predominantly loam soil. Summer highs average 82ยฐF, so choose short-season varieties of Kabocha to ensure they mature before fall.

Uinta County, WY (Zone 4b) Very short season
75 days
Last Spring Frost June 17
75 growing days
First Fall Frost August 31

Uinta County Soil Profile

Soil Type

Loam

Soil pH

6.3-8.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Apr 29 Transplant: Jul 1 🍅 Harvest: Sep 30 – Oct 28
Recommended (50%) ✗ May not fit
Start indoors: May 6 Transplant: Jul 8 🍅 Harvest: Oct 7 – Nov 4
Safe Start (90%) ✗ May not fit
Start indoors: May 13 Transplant: Jul 15 🍅 Harvest: Oct 14 – Nov 11

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.

Soil Compatibility in Uinta County

How your county's soil matches Kabocha's growing requirements.

Soil pH

Your soil pH (6.3โ€“8.3) overlaps with Kabocha's range (6.0โ€“7.5), though not a perfect match.

Soil Texture

The loam soil in Uinta County is excellent for Kabocha โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Kabocha.

How to Plant Kabocha

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.3″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Kabocha needs ~1,064 GDD — county provides 862 GDD May not mature

Kabocha Planting Timeline โ€” Uinta County, WY

Kabocha Planting Calendar

Activity When Date Range
Start Indoors May 6 May 6 โ€“ May 20
Transplant Outdoors July 8 Jul 8 โ€“ Jul 22
Direct Sow July 1 Jul 1 โ€“ Jul 22
Harvest October 7 Oct 7 โ€“ Nov 4

Plant 1" deep ยท 30" apart ยท Rows 42" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Start Indoors
June โ€”
July Transplant Outdoors Direct Sow
August โ€”
September โ€”
October Harvest
November Harvest
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

85โ€“100 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 4b

๐Ÿ“† Growing Season

75 days in Uinta County

Growing Tips for Kabocha in Uinta County

Direct sow Kabocha outdoors after June 17 in Uinta County when soil has warmed and frost danger has passed.

Your 75.0-day growing season in Uinta County is tight for Kabocha (85.0-100.0 days to maturity). Start indoors and choose early-maturing varieties.

Common pests for Kabocha in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

Uinta County receives only 24" of rain annually. Kabocha needs consistent moisture โ€” install drip irrigation or water deeply 2-3 times per week.

General growing tips

Direct sow after frost or start indoors. Harvest when the skin is hard and dull. The stem should be dry and corky. Stores well for 3-4 months in a cool, dry place.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Kabocha in Uinta County, WY?

Uinta County is in Zone 4b with an average last frost of June 17. Plan your Kabocha planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Uinta County, WY?

Uinta County, Wyoming is in USDA Hardiness Zone 4b. The average last spring frost is June 17 and first fall frost is August 31.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Uinta County gardeners in Zone 4b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Uinta County, WY. Local conditions may vary. Last updated: April 2026.