When should I plant Mostassa in Zone 4a?

Direct sow Mostassa outdoors around Apr 7. Expect first harvest around May 22.

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. Mostassa needs 45 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 7 successions.

Zone 4a has cold winters and a moderate growing season. Timing is key for Mostassa in this zone. Darrera gelada: May 5. Primera gelada: Oct 1.

Outdoor

Harvest

Apr 7Oct 1

Season: May 5 – Oct 1 (149 dies) · Succession: plant every 2 weeks (up to 7x)

Zona4a

Darrera geladaMay 5

Primera geladaOct 1

Temporada149 dies

Collita45 dies

SolMitja Ombra

Direct sow Mostassa seeds outdoors around Apr 7. Wait until soil temperature reaches 40F. Space plants at 4/m² (15cm espaiat).

First harvest approximately May 22 (~45 dies from planting). Continue harvesting until first frost (Oct 1).

For a fall harvest, plant Mostassa around Aug 20 (6 weeks before first frost).

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