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When to Plant Romanesco in Calhoun County, WV

Romanesco is a stunning brassica with a lime-green head composed of fractal-patterned spiraling florets. It has a nuttier, milder flavor than cauliflower.

Calhoun County, West Virginia is in USDA Zone 6a. The average last spring frost is April 25 and the first fall frost is October 22, giving you a growing season of approximately 180 days.

At an elevation of 3,223 feet, Calhoun County receives approximately 48.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86ยฐF, providing good warmth for Romanesco during the growing season.

Calhoun County, WV (Zone 6a) Moderate season
180 days
Last Spring Frost April 25
180 growing days
First Fall Frost October 22

Calhoun County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (65 days to spare)
Start indoors: Mar 12 Transplant: Apr 16 🍅 Harvest: Jul 2 – Aug 13
Recommended (50%) ✓ Fits season (61 days to spare)
Start indoors: Mar 21 Transplant: Apr 25 🍅 Harvest: Jul 11 – Aug 22
Safe Start (90%) ✓ Fits season (52 days to spare)
Start indoors: Apr 10 Transplant: May 15 🍅 Harvest: Jul 31 – Sep 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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/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

Romanesco needs ~1,269 GDD — county provides 2,610 GDD Excellent fit

Romanesco Planting Timeline โ€” Calhoun County, WV

Romanesco Planting Calendar

Activity When Date Range
Start Indoors March 21 Mar 21 โ€“ Apr 4
Transplant Outdoors April 25 Apr 25 โ€“ May 9
Direct Sow April 11 Apr 11 โ€“ May 2
Fall Sowing August 13 Aug 13 โ€“ Aug 27
Harvest July 11 Jul 11 โ€“ Aug 22

Plant 1" deep ยท 15" apart ยท Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

75โ€“100 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 6a

Growing Season

180 days

Growing Tips for Calhoun County

Start seeds indoors 5-7 weeks before transplanting. Provide consistent moisture and avoid temperature stress. Harvest when head is fully formed but before florets begin to separate.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Strawberries

Level Up Your Garden

Frequently Asked Questions

When should I plant Romanesco in Calhoun County, WV?

Calhoun County is in Zone 6a with an average last frost of April 25. Plan your Romanesco planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Calhoun County, WV?

Calhoun County, West Virginia is in USDA Hardiness Zone 6a. The average last spring frost is April 25 and first fall frost is October 22.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Calhoun County gardeners in Zone 6a 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 Calhoun County, WV. Local conditions may vary. Last updated: April 2026.