When to Plant Serviceberries in Walworth County, WI
Serviceberries (saskatoons) are attractive native shrubs or small trees producing sweet, blueberry-like fruits. They have beautiful spring flowers and vibrant fall color.
Walworth County, Wisconsin is in USDA Zone 5a. The average last spring frost is April 26 and the first fall frost is October 13, giving you a growing season of approximately 170 days.
At an elevation of 1,101 feet, Walworth County receives approximately 39.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Serviceberries during the growing season.
Walworth County Soil Profile
Soil Type
Silt Loam
Soil pH
6.2-6.9
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
Serviceberries Planting Timeline — Walworth County, WI
Serviceberries Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 17 | May 17 – May 31 |
· 120" apart · Rows 144" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | — |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
730–1095 days
Soil pH
5.5 – 7
USDA Zone
Zone 5a
Growing Season
170 days
Growing Tips for Walworth County
Plant in well-drained soil. Minimal pruning needed beyond removing dead wood. Protect fruit from birds with netting. Berries ripen in early summer and are excellent fresh or in pies.
Companion Planting
Good Companions
Level Up Your Garden
Serviceberries in Other Locations
Frequently Asked Questions
When should I plant Serviceberries in Walworth County, WI?
Walworth County is in Zone 5a with an average last frost of April 26. Plan your Serviceberries planting based on this frost date — see the calendar above for exact timing.
What planting zone is Walworth County, WI?
Walworth County, Wisconsin is in USDA Hardiness Zone 5a. The average last spring frost is April 26 and first fall frost is October 13.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Walworth County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.
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