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.

By looking at the USDA zone info for Rio Vista it's possible to determine when it's a good idea 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 require warm weather which means that you must wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant sweet potato vine in Rio Vista is March. However, you really should wait until April 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 September. 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. Starting your sweet potato vine indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Rio Vista the average date of last frost happens on February 15. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Rio Vista is an average the actual date of last frost will vary from year to year. Since half of the time in Rio Vista you get surprised by a frost after February 15 be ready to protect your sweet potato vine if you have a surprise late frost.

USDA Zone Info for Rio Vista

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

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

Plants to Grow in Rio Vista

You may be interested in your other planting guides for Rio Vista.