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🌿 Growing Parsley in Zone 4a

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

Planting Calendar

Indoor

Outdoor

Harvest

Mar 10Oct 1

Season: May 5 – Oct 1 (149 days)

Zone4a

Last FrostMay 5

First FrostOct 1

Season Length149 days

Days to Harvest70

SunPart Sun / Part Shade

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Parsley in Zone 4a

Start Seeds Indoors: Mar 10

Start Parsley seeds indoors around Mar 10 (8 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 14–28 days.

Transplant Outdoors: Apr 21

Transplant Parsley 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 10

First harvest approximately Jun 10 (~50 days from transplant). Continue harvesting until first frost (Oct 1). Parsley can overwinter in mild climates for continued harvest.

Fall Planting: Aug 6

For a fall harvest, plant Parsley around Aug 6 (8 weeks before first frost).

Companion Planting

✅ Tomatoes✅ Asparagus ✅ Corn✅ Peppers✅ Peas

❌ Lettuce❌ Mint

Parsley 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

Frequently Asked Questions

When should I plant Parsley in Zone 4a?

Start Parsley seeds indoors around Mar 10. Transplant outdoors after Apr 21. Expect first harvest around Jun 10.

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 Parsley in Zone 4a?

Yes. Parsley needs 70 days to harvest. Zone 4a has a 149-day growing season, which is sufficient.

What is the best month to plant Parsley in Zone 4a?

The best time to start Parsley in Zone 4a is Mar. Begin seeds indoors around Mar 10, then transplant outdoors after the last frost date of May 5.

What companion plants grow well with Parsley?

Good companion plants for Parsley include Tomatoes, Asparagus, Corn, Peppers, Peas. Avoid planting Parsley near Lettuce, Mint.

How long does Parsley take to harvest?

Parsley takes approximately 70 days from planting to harvest. In Zone 4a, expect your first harvest around Jun 10.

Plan Your Parsley Garden

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

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