One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Plymouth it's a good idea to determine when it's the best time to plant runner beans.

Planting Calendar for Runner beans

Frost tolerance for runner beans:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since runner beans require warm weather you need to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant runner beans in Plymouth 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. If you wait any later than that and your runner beans may not have a chance to grow to maturity. Starting your runner beans indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Plymouth. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Plymouth is not always accurate the actual date of last frost will vary from year to year. Half of the time in Plymouth it frosts late in the year after April 15 so make sure that you are ready to protect your runner beans if you have a surprise late frost.

USDA Zone Info for Plymouth

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Plymouth

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