When can I plant Green beans in Zone 3b

One of the first steps we take when we are estimating our gardening schedule is find our USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

By using the USDA zone info for Zone 3b it's possible to determine when to plant green beans.


Planting Calendar for Green beans

Frost tolerance for green beans: Not tolerant of frost.
When you should plant them: After all chance of frost has passed.

Green beans do not do well in cold weather which means that you have to wait until it warms up after the last frost before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant green beans
Possibly ok, but a risky time to plant green beans
Probably not a good time to plant green beans

The earliest that you can plant green beans in Zone 3b is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant green beans and expect a good harvest is probably August. If you wait any later than that and your green beans may not have a chance to grow to maturity. Starting your green beans indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Zone 3b the average date of last frost happens on May 15. We can expect an average low temperature of -35°F in the coldest months of winter.

Always keep in mind that our actual date of last frost is just an average because it is based on the USDA zone info for Zone 3b and it changes from year to year. Since half of the time in Zone 3b we get surprised by a frost after May 15 be ready to cover your green beans if we have a late frost.

USDA Zone Info for Zone 3b

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-35°F
Highest Expected Low-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Zone 3b

You may be interested in our other planting guides for Zone 3b.