The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Sinton should be reffered to in order to determine when it's a good idea to plant sweet potatos.

Planting Calendar for Sweet Potatos

Frost tolerance for sweet potatos:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since sweet potatos are not cold tolerant it is necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant sweet potatos in Sinton 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 potatos and expect a good harvest is probably September. If you wait any later than that and your sweet potatos may not have a chance to fully mature. You can get started a few weeks earlier by starting your sweet potatos indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Sinton. In the coldest months of winter you can expect an average low temperature of 20°F.

Remember that USDA zone info for Sinton is just an average and the actual date of last frost changes from year to year. Since half of the time in Sinton there is a last frost after February 15 be ready to cover your sweet potatos if you have one of those late frosts.

USDA Zone Info for Sinton

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 Sinton

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