When should I plant Water Parsley in Zone 3a?

Start Water Parsley seeds indoors around Mar 27. Transplant outdoors after May 8. Expect first harvest around Jun 27.

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 Water Parsley in Zone 3a?

Yes. Water Parsley needs 75 days to harvest. Zone 3a has a 113-day growing season, which is sufficient.

Growing Water Parsley in Zone 3a

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

Planting Calendar

Indoor

Outdoor

Harvest

Mar 27Sep 12

Season: May 22 – Sep 12 (113 days)

Zone3a

Last FrostMay 22

First FrostSep 12

Season Length113 days

Days to Harvest75

Sunfull-to-part

Frost ToleranceLight

Spacing4/sqft (6" apart)

When to Plant Water Parsley in Zone 3a

Start Seeds Indoors: Mar 27

Start Water Parsley seeds indoors around Mar 27 (8 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 14–28 days.

Transplant Outdoors: May 8

Transplant Water Parsley seedlings outdoors after May 8. Wait until soil temperature reaches 50°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Jun 27

First harvest approximately Jun 27 (~50 days from transplant). Continue harvesting until first frost (Sep 12).

Companion Planting

✅ Watercress

Water 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

Plan Your Water Parsley Garden

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

Start Free Water Parsley Growing Guide