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🥔 Growing Radish in Zone 1b
Zone 1b has harsh winters and a short growing season. Start Radish early indoors to maximize your harvest window. Last frost: May 25. First frost: Aug 28.
Planting Calendar
Season: May 25 – Aug 28 (95 days) · Succession: plant every 2 weeks (up to 5x)
When to Plant Radish in Zone 1b
Sow Seeds Outdoors: Apr 20
Direct sow Radish seeds outdoors around Apr 20. Soil temperature should be at least 40°F. Space at 16/sqft (3" apart).
Harvest: May 15
First harvest approximately May 15 (~25 days from planting). Continue harvesting until first frost (Aug 28).
Fall Planting: Jul 24
For a fall harvest, plant Radish around Jul 24 (5 weeks before first frost).
Companion Planting
Radish in Other Zones
1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13bFrequently Asked Questions
When should I plant Radish in Zone 1b?
Direct sow Radish outdoors around Apr 20. Harvest around May 15.
What is the last frost date for Zone 1b?
The average last spring frost date for Zone 1b is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.
Can I grow Radish in Zone 1b?
Yes. Radish needs 25 days to harvest. Zone 1b has a 95-day growing season, which is sufficient. You can plant up to 5 successions.
What is the best month to plant Radish in Zone 1b?
The best time to plant Radish in Zone 1b is around Apr 20, when soil temperatures are suitable and frost risk has passed.
What companion plants grow well with Radish?
Good companion plants for Radish include Nasturtiums, Spinach, Lettuce, Peas. Avoid planting Radish near Hyssop.
How long does Radish take to harvest?
Radish takes approximately 25 days from planting to harvest. In Zone 1b, expect your first harvest around May 15.
Plan Your Radish Garden
Track Radish from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Radish Growing Guide