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Growing Purple Top White Globe in Zone 6a

Brassica rapa

✓ Well Suited for Zone 6a
Score: 100/100

🌡️ USDA Hardiness Zone 6a

Moderate Continental

USDA 2023 Verified
Growing Season
150-180 days
Winter Minimum
-10°F to -5°F
(-23.3°C to -20.6°C)
Last Spring Frost
April 25
50% probability
First Fall Frost
October 15
50% probability
AHS Heat Zone 4-7
15 to 30 heat days per year • Low to Moderate heat stress

Typical regions: Denver CO, Central Missouri, Southern Ohio, Coastal Maine

📊 Data Source:
USDA Plant Hardiness Zone Map 2023 • Frost dates from NOAA station USW00094728 • Last verified: 1/22/2026

✓ Zone Compatibility Analysis

high confidence

Excellent match: 47 days to maturity with 133 days buffer in 180-day season.

Recommendation: Direct sowing and transplanting both viable. Excellent fit for this zone.

💾 Suitability computed by Solara Agricultural Intelligence Platform

📅 Zone 6a Planting Calendar for Purple Top White Globe

Based on NOAA climate normals for Zone 6a. Dates show 50% probability (average year).

🌱 Start Seeds Indoors
March 12
✓ Database-computed optimal date
🪴 Transplant Outdoors
April 30
✓ Database-computed optimal date
🌾 Direct Sow (Alternative)
2 weeks after April 25
For warm-season crops
🥕 Expected Harvest
June 16
Complete before October 15

💡 Zone 6a Growing Tips

  • • Growing season: 150-180 frost-free days
  • • Excellent match for this zone - both direct sowing and transplanting work well
  • • Monitor soil temperature before transplanting (minimum 55-60°F for most crops)

⚠️ Zone 6a Challenges

⚠️Variable spring weather
⚠️Occasional late frosts
⚠️Summer heat

✅ Best Plants for Zone 6a

✓Full vegetable garden
✓Most tomatoes
✓Peppers
✓Wide variety of perennials

❄️ Winter in Zone 6a

Moderate winters with lows reaching -5°F to -10°F.

☀️ Summer in Zone 6a

Warm to hot summers with good growing conditions.

🔥 Heat Management for AHS Zone 4-7

This zone experiences 15 to 30 heat days per year with low to moderate heat stress.

🌡️Mulching
🌡️Consistent watering
🌡️Some afternoon shade for sensitive plants

Source: American Horticultural Society

📊 Purple Top White Globe Quick Facts

Days to Maturity
35-60
Difficulty
intermediate
Season
summer
Type
OP

📍 View Purple Top White Globe Guide for Other Zones

Zone 1aZone 1bZone 2aZone 2bZone 3aZone 3bZone 4aZone 4bZone 5aZone 5bZone 6aZone 6bZone 7aZone 7bZone 8aZone 8bZone 9aZone 9bZone 10aZone 10bZone 11aZone 11bZone 12aZone 12bZone 13aZone 13b

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