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When to Plant Radish in Monroe County, NY

Radishes are one of the fastest-growing vegetables, with some varieties ready in under a month. They come in round, elongated, and large winter types.

Monroe County, New York is in USDA Zone 6a. The average last spring frost is April 29 and the first fall frost is October 20, giving you a growing season of approximately 174 days.

At an elevation of 435 feet, Monroe County receives approximately 43.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86ยฐF, providing good warmth for Radish during the growing season.

Monroe County, NY (Zone 6a) Moderate season
174 days
Last Spring Frost April 29
174 growing days
First Fall Frost October 20

Monroe County Soil Profile

Soil Type

Silt Loam

Soil pH

4.9-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (121 days to spare)
Transplant: Apr 26 🍅 Harvest: May 24 – Jun 14
Recommended (50%) ✓ Fits season (125 days to spare)
Transplant: Apr 29 🍅 Harvest: May 27 – Jun 17
Safe Start (90%) ✓ Fits season (124 days to spare)
Transplant: May 14 🍅 Harvest: Jun 11 – Jul 2

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
Radish needs ~413 GDD — county provides 2,523 GDD Excellent fit

Radish Planting Timeline โ€” Monroe County, NY

Radish Planting Calendar

Activity When Date Range
Direct Sow April 15 Apr 15 โ€“ May 6
Fall Sowing August 11 Aug 11 โ€“ Aug 25
Harvest May 13 May 13 โ€“ Jun 3

Plant 0.5" deep ยท 2" apart ยท Rows 6" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

22โ€“35 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 6a

Growing Season

174 days

Growing Tips for Monroe County

Direct sow every 1-2 weeks for continuous harvest. Do not transplant. Harvest spring radishes promptly to prevent them from becoming pithy and hot.

Companion Planting

Good Companions

Avoid Planting Near

  • Hyssop

Level Up Your Garden

Frequently Asked Questions

When should I plant Radish in Monroe County, NY?

Monroe County is in Zone 6a with an average last frost of April 29. Plan your Radish planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Monroe County, NY?

Monroe County, New York is in USDA Hardiness Zone 6a. The average last spring frost is April 29 and first fall frost is October 20.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” 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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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Monroe County, NY. Local conditions may vary. Last updated: April 2026.