Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of estimating when it's possible to plant tropical hibiscus is to refer to the USDA zone info for Roanoke.

Planting Calendar for Tropical Hibiscus

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

Since tropical hibiscus do not do well in cold weather it is necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant tropical hibiscus in Roanoke 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 grow to maturity. You can get started a few weeks earlier by starting your tropical hibiscus indoors.

Last Frost Date

In Roanoke the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of 5°F.

It's important to remember that USDA zone info for Roanoke is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Roanoke last frost occurs after April 15 so always be ready to protect your tropical hibiscus in the event of one of those late frosts.

USDA Zone Info for Roanoke

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 Roanoke

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