When should I plant Mostassa in Zone 9b?

Direct sow Mostassa outdoors around Feb 10. Expect first harvest around Mar 27.

What is the last frost date for Zone 9b?

The average last spring frost date for Zone 9b is Mar 10. The first fall frost averages Nov 15, giving a 250-day growing season.

Can I grow Mostassa in Zone 9b?

Yes. Mostassa needs 45 days to harvest. Zone 9b has a 250-day growing season, which is sufficient. You can plant up to 14 successions.

Growing Mostassa in Zone 9b

Zone 9b has warm winters and an extended growing season -- excellent for heat-loving crops like Mostassa. Darrera gelada: Mar 10. Primera gelada: Nov 15.

Planting Calendar

Outdoor

Harvest

Feb 10Nov 15

Season: Mar 10 – Nov 15 (250 dies) · Succession: plant every 2 weeks (up to 14x)

Zona9b

Darrera geladaMar 10

Primera geladaNov 15

Temporada250 dies

Collita45 dies

SolMitja Ombra

When to Plant Mostassa in Zone 9b

Sow Seeds Outdoors: Feb 10

Direct sow Mostassa seeds outdoors around Feb 10. Wait until soil temperature reaches 40F. Space plants at 4/m² (15cm espaiat).

Harvest: Mar 27

First harvest approximately Mar 27 (~45 dies from planting). Continue harvesting until first frost (Nov 15).

Fall Planting: Oct 4

For a fall harvest, plant Mostassa around Oct 4 (6 weeks before first frost).

Mostassa 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 13b

Plan Your Garden Mostassa

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

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