When should I plant Water Spinach in Zone 3a?

Direct sow Water Spinach outdoors around Apr 10. Harvest around May 10.

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 Spinach in Zone 3a?

Yes. Water Spinach needs 30 days to harvest. Zone 3a has a 113-day growing season, which is sufficient. You can plant up to 5 successions.

Growing Water Spinach in Zone 3a

Zone 3a has harsh winters and a short growing season. Start Water Spinach 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) · Succession: plant every 2 weeks (up to 5x)

Zone3a

Last FrostMay 22

First FrostSep 12

Season Length113 days

Days to Harvest30

SunPart Sun / Part Shade

Frost ToleranceHeavy

Spacing4/sqft (6" apart)

When to Plant Water Spinach in Zone 3a

Sow Seeds Outdoors: Apr 10

Direct sow Water Spinach seeds outdoors around Apr 10. Soil temperature should be at least 35°F. Space at 4/sqft (6" apart).

Harvest: May 10

First harvest approximately May 10 (~30 days from planting). Continue harvesting until first frost (Sep 12). Water Spinach can overwinter in mild climates for continued harvest.

Fall Planting: Aug 1

For a fall harvest, plant Water Spinach around Aug 1 (6 weeks before first frost).

Water Spinach 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 Spinach Garden

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

Start Free Water Spinach Growing Guide