When to Plant Cauliflower in Monroe County, OH
Cauliflower is a cool-season brassica that produces dense white, purple, or green heads called curds. It is more finicky than broccoli but rewards with a mild, nutty flavor.
Monroe County, Ohio is in USDA Zone 6a. The average last spring frost is April 27 and the first fall frost is October 20, giving you a growing season of approximately 176 days.
At an elevation of 567 feet, Monroe County receives approximately 31.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Cauliflower during the growing season.
Monroe County Soil Profile
Soil Type
Silt Loam
Soil pH
5.8-6.9
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
Cauliflower Planting Timeline — Monroe County, OH
Cauliflower Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 23 | Mar 23 – Apr 6 |
| Transplant Outdoors | April 27 | Apr 27 – May 11 |
| Direct Sow | April 13 | Apr 13 – May 4 |
| Fall Sowing | August 11 | Aug 11 – Aug 25 |
| Harvest | June 22 | Jun 22 – Aug 24 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
High — keep soil consistently moist
Days to Maturity
55–100 days
Soil pH
6 – 7
USDA Zone
Zone 6a
Growing Season
176 days
Growing Tips for Monroe County
Start seeds indoors 6 weeks before transplanting. Blanch white varieties by tying outer leaves over the head. Provide consistent moisture and avoid temperature extremes.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Cauliflower in Other Locations
Frequently Asked Questions
When should I plant Cauliflower in Monroe County, OH?
Monroe County is in Zone 6a with an average last frost of April 27. Plan your Cauliflower planting based on this frost date — see the calendar above for exact timing.
What planting zone is Monroe County, OH?
Monroe County, Ohio is in USDA Hardiness Zone 6a. The average last spring frost is April 27 and first fall frost is October 20.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Monroe County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.
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