One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to determine when to plant snap beans by looking at the USDA zone info for Zone 1a.

Planting Calendar for Snap beans

Frost tolerance for snap beans:	Not tolerant of frost.
When to plant:	After the last frost.

Since snap beans are not cold tolerant you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant snap beans in Zone 1a is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant snap beans and expect a good harvest is probably July. If you wait any later than that and your snap beans may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your snap beans indoors.

Last Frost Date

On average the last frost has passed is on June 15 in Zone 1a. You can expect an average low temperature of -60°F in the coldest months of winter.

Remember that USDA zone info for Zone 1a is an average and the actual date of last frost is different every year. Half of the time in Zone 1a there is a last frost after June 15 so always be ready to protect your snap beans in the event of a surprise late frost.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)	June 15
Average Date of First Frost (fall)	July 15
Lowest Expected Low	-60°F
Highest Expected Low	-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in your other planting guides for Zone 1a.