Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant sweet potato vine in Crystal City can be figured out by using the USDA zone info.

Planting Calendar for Sweet Potato Vine

Frost tolerance for sweet potato vine:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since sweet potato vine do not do well in cold weather you need to wait until after all chance of frost has passed before you can plant them.

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

Last Frost Date

On average all chance of frost has passed is on February 15 in Crystal City. You can expect an average low temperature of 20°F in the coldest months of winter.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Crystal City and it will vary from year to year. Half of the time in Crystal City there is a last frost after February 15 so always be ready to cover your sweet potato vine in the event of one of those late frosts.

USDA Zone Info for Crystal City

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Crystal City

You may be interested in your other planting guides for Crystal City.