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🥔 Growing Radish in Zone 3a
Zone 3a has harsh winters and a short growing season. Start Radish early indoors to maximize your harvest window. Last frost: May 22. First frost: Sep 12.
Planting Calendar
Season: May 22 – Sep 12 (113 days) · Succession: plant every 2 weeks (up to 6x)
When to Plant Radish in Zone 3a
Sow Seeds Outdoors: Apr 17
Direct sow Radish seeds outdoors around Apr 17. Soil temperature should be at least 40°F. Space at 16/sqft (3" apart).
Harvest: May 12
First harvest approximately May 12 (~25 days from planting). Continue harvesting until first frost (Sep 12).
Fall Planting: Aug 8
For a fall harvest, plant Radish around Aug 8 (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 3a?
Direct sow Radish outdoors around Apr 17. Harvest around May 12.
What is the last frost date for Zone 3a?
The average last spring frost date for Zone 3a is May 22. The first fall frost averages Sep 12, giving a 113-day growing season.
Can I grow Radish in Zone 3a?
Yes. Radish needs 25 days to harvest. Zone 3a has a 113-day growing season, which is sufficient. You can plant up to 6 successions.
What is the best month to plant Radish in Zone 3a?
The best time to plant Radish in Zone 3a is around Apr 17, 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 3a, expect your first harvest around May 12.
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