The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Port Royal you can estimate when it's a good idea to plant sweet potatos by referring to the USDA zone info.

Planting Calendar for Sweet Potatos

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

You can not plant sweet potatos until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant sweet potatos in Port Royal 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 potatos and expect a good harvest is probably August. You probably don't want to wait any later than that or else your sweet potatos may not have a chance to grow to maturity. Starting your sweet potatos indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Port Royal the average date of last frost happens on March 15. You should expect an average low temperature of 15°F in the coldest months of winter.

Keep in mind that USDA zone info for Port Royal 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 Port Royal it frosts late in the year after March 15 so just be sure to be ready to cover your sweet potatos in the event of a surprise late frost.

USDA Zone Info for Port Royal

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 Port Royal

You may be interested in your other planting guides for Port Royal.