When should I plant Retiisi in Zone 4a?

Direct sow Retiisi 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. Retiisi 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 Retiisi in this zone. Viimeinen halla: May 5. Ensimmäinen halla: Oct 1.

Outdoor

Harvest

Mar 31Oct 1

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

Vyöhyke4a

Viimeinen hallaMay 5

Ensimmäinen hallaOct 1

Kausi149 päivää

Sato25 päivää

AurinkoTäysi Aurinko

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

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

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

❌ Iisoppi

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