One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of determining when it's possible to plant squash is to check out the USDA zone info for Hilton Head Island.

Planting Calendar for Squash

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

Since squash are not cold tolerant you must wait until after the last frost has passed before you can plant them.

The earliest that you can plant squash in Hilton Head Island 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 squash and expect a good harvest is probably August. You probably don't want to wait any later than that or else your squash may not have a chance to fully mature. If you are starting your squash indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Hilton Head Island. In the coldest months of winter you should expect an average low temperature of 15°F.

Since the USDA zone info for Hilton Head Island is an average the actual date of last frost will vary from year to year. Half of the time in Hilton Head Island you get a frost after March 15 so be sure to be ready to protect your squash in the event of one of those late frosts.

USDA Zone Info for Hilton Head Island

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 Hilton Head Island

You may be interested in your other planting guides for Hilton Head Island.