When should I plant Radijs in Zone 4b?

Direct sow Radijs outdoors around Mar 27. Expect first harvest around Apr 21.

What is the last frost date for Zone 4b?

The average last spring frost date for Zone 4b is May 1. The first fall frost averages Oct 5, giving a 157-day growing season.

Yes. Radijs needs 25 days to harvest. Zone 4b has a 157-day growing season, which is sufficient. You can plant up to 9 successions.

🥔

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

Outdoor

Harvest

Mar 27Oct 5

Season: May 1 – Oct 5 (157 dagen) · Succession: plant every 2 weeks (up to 9x)

Zone4b

Laatste vorstMay 1

Eerste vorstOct 5

Seizoen157 dagen

Oogst25 dagen

ZonVolle Zon

Direct sow Radijs seeds outdoors around Mar 27. Wait until soil temperature reaches 40F. Space plants at 16/m² (8cm afstand).

First harvest approximately Apr 21 (~25 dagen from planting). Continue harvesting until first frost (Oct 5).

For a fall harvest, plant Radijs around Aug 31 (5 weeks before first frost).

✅ Oost-Indische Kersen✅ Spinazie ✅ Sla✅ Erwten

❌ Hyssop

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 13b

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