When should I plant Sorrel in Zone 4a?

Start Sorrel seeds indoors around Mar 24. Transplant outdoors after Apr 21. Expect first harvest around Jun 5.

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.

Can I grow Sorrel in Zone 4a?

Yes. Sorrel needs 40 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

Growing Sorrel in Zone 4a

Zone 4a has cold winters and a moderate growing season. Timing is key for Sorrel in this zone. Last frost: May 5. First frost: Oct 1.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 24Oct 1

Season: May 5 – Oct 1 (149 days)

Zone4a

Last FrostMay 5

First FrostOct 1

Season Length149 days

Days to Harvest40

SunPart Sun / Part Shade

Frost ToleranceHeavy

Spacing4/sqft (6" apart)

When to Plant Sorrel in Zone 4a

Start Seeds Indoors: Mar 24

Start Sorrel seeds indoors around Mar 24 (6 weeks before last frost). Optimal germination temperature: 65°F. Germinates in 7–14 days.

Transplant Outdoors: Apr 21

Transplant Sorrel seedlings outdoors after Apr 21. Wait until soil temperature reaches 45°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Jun 5

First harvest approximately Jun 5 (~45 days from transplant). Continue harvesting until first frost (Oct 1). Sorrel can overwinter in mild climates for continued harvest.

Sorrel 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 Sorrel Garden

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

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