When to Plant Raspberries in Cerro Gordo County, IA
Raspberries are beloved bramble fruits producing sweet, delicate berries in red, golden, black, and purple varieties. They spread by underground runners and are very productive.
Cerro Gordo County, Iowa is in USDA Zone 4b. The average last spring frost is May 1 and the first fall frost is October 7, giving you a growing season of approximately 159 days.
At an elevation of 692 feet, Cerro Gordo County receives approximately 38.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Raspberries to ensure they mature before fall.
Cerro Gordo County Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-7.3
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
Raspberries Planting Timeline — Cerro Gordo County, IA
Raspberries Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 29 | May 29 – Jun 12 |
· 24" apart · Rows 72" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | Transplant Outdoors |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
365–730 days
Soil pH
5.5 – 6.5
USDA Zone
Zone 4b
Growing Season
159 days
Growing Tips for Cerro Gordo County
Provide a trellis for support. Prune summer-bearing types by removing spent canes after harvest. For ever-bearing types, mow all canes in late winter for a single fall crop.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Raspberries in Other Locations
Frequently Asked Questions
When should I plant Raspberries in Cerro Gordo County, IA?
Cerro Gordo County is in Zone 4b with an average last frost of May 1. Plan your Raspberries planting based on this frost date — see the calendar above for exact timing.
What planting zone is Cerro Gordo County, IA?
Cerro Gordo County, Iowa is in USDA Hardiness Zone 4b. The average last spring frost is May 1 and first fall frost is October 7.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Cerro Gordo County gardeners in Zone 4b organize planting dates, track what's growing, and never miss a planting window.
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