One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to determine when you can plant runner beans by referring to the USDA zone info for Jasper.

Planting Calendar for Runner beans

Frost tolerance for runner beans:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Runner beans require warm weather which means that it's necessary to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant runner beans in Jasper is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant runner beans and expect a good harvest is probably August. Any later than that and your runner beans may not have a chance to really do well. Starting your runner beans indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Jasper. You can expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Jasper is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Jasper there is a last frost after March 15 be ready to cover your runner beans in the event of a late frost.

USDA Zone Info for Jasper

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Jasper

You may be interested in your other planting guides for Jasper.