The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of determining when it's the best time to plant string beans is to use the USDA zone info for South Lyon.

Planting Calendar for String beans

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

You can not plant string beans until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant string beans in South Lyon 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 string beans and expect a good harvest is probably August. You probably don't want to wait any later than that or else your string beans may not have a chance to fully mature. If you are starting your string beans indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

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

Remember that USDA zone info for South Lyon is an average and the actual date of last frost changes from year to year. Half of the time in South Lyon you get a frost after April 15 so be sure to be ready to protect your string beans in the event of a surprise late frost.

USDA Zone Info for South Lyon

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 South Lyon

You may be interested in your other planting guides for South Lyon.