Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Rock Falls you can figure out when it's a good idea to plant sweet potato vine by reviewing the USDA zone info.

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.

Since sweet potato vine do not do well in cold weather you really should wait until after the last frost before you can plant them.

The earliest that you can plant sweet potato vine in Rock Falls 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. 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. You can get started a few weeks earlier by starting your sweet potato vine indoors.

Last Frost Date

On average the last frost is on April 15 in Rock Falls. You can expect an average low temperature of -15°F in the coldest months of winter.

Remember that USDA zone info for Rock Falls is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Rock Falls you get a frost after April 15 so be sure to be ready to protect your sweet potato vine in the event of one of those late frosts.

USDA Zone Info for Rock Falls

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 Rock Falls

You may be interested in your other planting guides for Rock Falls.