When should I plant Radijs in Zone 4a?

Direct sow Radijs outdoors around Mar 31. Expect first harvest around Apr 25.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 5. The first fall frost averages Oct 1, giving a 149-day growing season.

Yes. Radijs needs 25 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 8 successions.

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Zone 4a has cold winters and a moderate growing season. Timing is key for Radijs in this zone. Laatste vorst: May 5. Eerste vorst: Oct 1.

Outdoor

Harvest

Mar 31Oct 1

Season: May 5 – Oct 1 (149 dagen) · Succession: plant every 2 weeks (up to 8x)

Zone4a

Laatste vorstMay 5

Eerste vorstOct 1

Seizoen149 dagen

Oogst25 dagen

ZonVolle Zon

Direct sow Radijs seeds outdoors around Mar 31. Wait until soil temperature reaches 40F. Space plants at 16/m² (8cm afstand).

First harvest approximately Apr 25 (~25 dagen from planting). Continue harvesting until first frost (Oct 1).

For a fall harvest, plant Radijs around Aug 27 (5 weeks before first frost).

✅ Oost-Indische Kersen✅ Spinazie ✅ Sla✅ Erwten

❌ Hyssop

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Track Radijs from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.