When to Plant Acorn Squash in Sawyer County, WI
May in Sawyer County, Wisconsin — your action list
We've pulled the most time-sensitive tasks for Sawyer County, Wisconsin this May and put them front and centre. Tackle them in order.
-
Put acorn squash seeds straight in the ground
Succession planting is the secret here. Put in a row now, another in 2 weeks, a third in 4.
Before June arrives, get these ready
- Transplants going out: acorn squash
- Starting indoors: acorn squash
Acorn squash is a small winter squash with dark green, ribbed skin and mildly sweet orange flesh. It is perfect for stuffing and roasting as individual servings.
Sawyer County, Wisconsin is in USDA Zone 4a. The average last spring frost is May 17 and the first fall frost is September 25, giving you a growing season of approximately 131 days.
At an elevation of 815 feet, Sawyer County receives approximately 36.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Acorn Squash to ensure they mature before fall.
Sawyer County Soil Profile
Soil Type
Silt Loam
Soil pH
6.1-7.1
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.
Soil Compatibility in Sawyer County
How your county's soil matches Acorn Squash's growing requirements.
Soil pH
Your soil pH (6.1–7.1) overlaps with Acorn Squash's range (5.5–7.0), though not a perfect match.
Soil Texture
The silt loam soil in Sawyer County is excellent for Acorn Squash — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is excellent (5.0%) — Acorn Squash will thrive.
How to Plant Acorn Squash
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Acorn Squash
Acorn Squash needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.
| Month | Acorn Squash Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.6" | 0" | ❄️ Dormant |
| Feb | — | 1.8" | 0" | ❄️ Dormant |
| Mar | — | 2.7" | 0" | ❄️ Dormant |
| Apr | — | 3.6" | 0" | ❄️ Dormant |
| May | 4.8" | 4.1" | 0.7" | 💧 Light watering |
| Jun | 4.8" | 3.9" | 0.9" | 💧 Light watering |
| Jul | 4.8" | 4" | 0.8" | 💧 Light watering |
| Aug | 4.8" | 4" | 0.8" | 💧 Light watering |
| Sep | 4.8" | 3.5" | 1.3" | 💧 Light watering |
| Oct | — | 3.1" | 0" | ❄️ Dormant |
| Nov | — | 2.8" | 0" | ❄️ Dormant |
| Dec | — | 1.7" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Sep in Sawyer County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Acorn Squash Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Acorn Squash Planting Timeline — Sawyer County, WI
Acorn Squash Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 5 | Apr 5 – Apr 19 |
| Transplant Outdoors | June 7 | Jun 7 – Jun 21 |
| Direct Sow | May 31 | May 31 – Jun 21 |
| Harvest | August 30 | Aug 30 – Oct 4 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | 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
1.1"/week · Natural rainfall sufficient
📅 Days to Maturity
80–100 days
🧪 Soil pH
Needs 5.5–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 4a
📆 Growing Season
131 days in Sawyer County
Growing Tips for Acorn Squash in Sawyer County
Direct sow Acorn Squash outdoors after May 17 in Sawyer County when soil has warmed and frost danger has passed.
Common pests for Acorn Squash in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow after last frost. Harvest when the ground spot turns orange and the skin is hard. Acorn squash has a shorter storage life than butternut, lasting about 2 months.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Acorn Squash in Other Locations
Frequently Asked Questions
When should I plant Acorn Squash in Sawyer County, WI?
Sawyer County is in Zone 4a with an average last frost of May 17. Plan your Acorn Squash planting based on this frost date — see the calendar above for exact timing.
What planting zone is Sawyer County, WI?
Sawyer County, Wisconsin is in USDA Hardiness Zone 4a. The average last spring frost is May 17 and first fall frost is September 25.
Your Sawyer County Garden Planner — Free
A 24-page printable planner built for Sawyer County (Zone 4a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.