One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when it's the best time to plant sweet potato vine is to use the USDA zone info for Marianna.

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 require warm weather you have to wait until after the last frost has passed before you can plant them.

The earliest that you can plant sweet potato vine in Marianna 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. Any later than that and your sweet potato vine may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your sweet potato vine indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Marianna. It might get as low as 15°F during the coldest months of winter.

It's important to remember that USDA zone info for Marianna is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Marianna it frosts late in the year after March 15 so be sure to be ready to cover your sweet potato vine if you have a late frost.

USDA Zone Info for Marianna

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Marianna

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