The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Devils Lake should be reviewed to figure out 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 has passed.

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

The earliest that you can plant sweet potato vine in Devils Lake is May. However, you really should wait until June 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. You probably don't want to wait any later than that or else your sweet potato vine may not have a chance to fully mature. If you are starting your sweet potato vine 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 May 15 in Devils Lake. It might get as low as -30°F during the coldest months of winter.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Devils Lake and it is different every year. Since half of the time in Devils Lake it frosts late in the year after May 15 be ready to cover your sweet potato vine if you have one of those late frosts.

USDA Zone Info for Devils Lake

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Devils Lake

You may be interested in your other planting guides for Devils Lake.