One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of figuring out when it's possible to plant zucchini is to look at the USDA zone info for Hilton Head Island.

Planting Calendar for Zucchini

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

It's probably a bad idea to plant zucchini until after the last frost because they are not cold tolerant.

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

Last Frost Date

The average date of last frost is March 15 in Hilton Head Island. In the coldest months of winter you can expect an average low temperature of 15°F.

Since the USDA zone info for Hilton Head Island may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Hilton Head Island it frosts late in the year after March 15 be ready to protect your zucchini in the event of a surprise late frost.

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.