The USDA Zone info is a great tool for gardeners to help us determine 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.

A common way of figuring out when it's the best time to plant tropical hibiscus is to look at the USDA zone info for Piedmont.

Planting Calendar for Tropical Hibiscus

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

Since tropical hibiscus are not cold tolerant you have to wait until after the last frost before you can plant them.

The earliest that you can plant tropical hibiscus in Piedmont 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 tropical hibiscus and expect a good harvest is probably August. Any later than that and your tropical hibiscus may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your tropical hibiscus indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Piedmont. You can expect an average low temperature of 5°F in the coldest months of winter.

It's important to remember that USDA zone info for Piedmont is just an average and the actual date of last frost is different every year. Since half of the time in Piedmont you get a frost after April 15 be ready to cover your tropical hibiscus if you have a late frost.

USDA Zone Info for Piedmont

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Piedmont

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