Before planting it is a good idea to find your USDA Zone info to determine 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.

It's a good idea to estimate when it's the best time to plant geranium by referring to the USDA zone info for Hilton Head Island.

Planting Calendar for Geranium

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

You really shouldn't plant geranium until after all chance of frost has passed because they require warm weather.

The earliest that you can plant geranium 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 geranium and expect a good harvest is probably August. Any later than that and your geranium may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your geranium indoors.

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.

Always keep in mind that USDA zone info for Hilton Head Island is not always accurate and the actual date of last frost is different every year. Half of the time in Hilton Head Island there is a last frost after March 15 so be sure to be ready to protect your geranium 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.