When should I plant Shepherd's Purse in Zone 3a?

Direct sow Shepherd's Purse outdoors around Apr 10. Harvest around May 25.

What is the last frost date for Zone 3a?

The average last spring frost date for Zone 3a is May 22. The first fall frost averages Sep 12, giving a 113-day growing season.

Can I grow Shepherd's Purse in Zone 3a?

Yes. Shepherd's Purse needs 45 days to harvest. Zone 3a has a 113-day growing season, which is sufficient.

Growing Shepherd's Purse in Zone 3a

Zone 3a has harsh winters and a short growing season. Start Shepherd's Purse early indoors to maximize your harvest window. Last frost: May 22. First frost: Sep 12.

Planting Calendar

Outdoor

Harvest

Apr 10Sep 12

Season: May 22 – Sep 12 (113 days)

Zone3a

Last FrostMay 22

First FrostSep 12

Season Length113 days

Days to Harvest45

Sunfull-to-part

Frost ToleranceHeavy

Spacing16/sqft (3" apart)

When to Plant Shepherd's Purse in Zone 3a

Sow Seeds Outdoors: Apr 10

Direct sow Shepherd's Purse seeds outdoors around Apr 10. Soil temperature should be at least 35°F. Space at 16/sqft (3" apart).

Harvest: May 25

First harvest approximately May 25 (~45 days from planting). Continue harvesting until first frost (Sep 12). Shepherd's Purse can overwinter in mild climates for continued harvest.

Fall Planting: Jul 18

For a fall harvest, plant Shepherd's Purse around Jul 18 (8 weeks before first frost).

Shepherd's Purse 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 Shepherd's Purse Garden

Track Shepherd's Purse from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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