Mung Bean illustration

Growing Mung Bean in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Mung Bean early indoors to maximize your harvest window. Last frost: May 15. First frost: Sep 22.

Planting Calendar

Outdoor
Harvest
May 22Sep 22

Season: May 15 – Sep 22 (130 days)

Zone3b
Last FrostMay 15
First FrostSep 22
Season Length130 days
Days to Harvest95
SunFull Sun
Frost ToleranceNone
Spacing9/sqft (4" apart)

When to Plant Mung Bean in Zone 3b

Sow Seeds Outdoors: May 22

Direct sow Mung Bean seeds outdoors around May 22. Soil temperature should be at least 68°F. Space at 9/sqft (4" apart).

Harvest: Aug 25

First harvest approximately Aug 25 (~95 days from planting). Continue harvesting until first frost (Sep 22).

Companion Planting

❌ Onion❌ Garlic

Plan Your Mung Bean Garden

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

Start Free Mung Bean Growing Guide