One of the best tools that you have as gardeners to help us figure out 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.

The USDA zone info for Franklin should be looked at to determine when it's possible to plant sweet potato vine.

Planting Calendar for Sweet Potato Vine

Frost tolerance for sweet potato vine:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Sweet Potato Vine do not do well in cold weather which means that you have to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant sweet potato vine in Franklin 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 sweet potato vine and expect a good harvest is probably August. If you wait any later than that and your sweet potato vine may not have a chance to really do well. You can get started a couple of weeks earlier by starting your sweet potato vine indoors.

Last Frost Date

The average date of last frost is April 15 in Franklin. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Franklin is an average the actual date of last frost is different every year. Half of the time in Franklin you get a frost after April 15 so always be ready to protect your sweet potato vine in the event of one of those late frosts.

USDA Zone Info for Franklin

Here is the info for USDA Zone 5b.

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

Plants to Grow in Franklin

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