One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Killeen you can determine when you can plant tropical hibiscus by looking at the USDA zone info.

Planting Calendar for Tropical Hibiscus

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

Tropical Hibiscus are not cold tolerant which means that you really should wait until it warms up after the last frost before you can plant them.

The earliest that you can plant tropical hibiscus in Killeen 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. If you wait any later than that and your tropical hibiscus may not have a chance to fully mature. Starting your tropical hibiscus indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Killeen the average date of last frost happens on March 15. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Killeen may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Killeen it frosts late in the year after March 15 so make sure that you are ready to cover your tropical hibiscus in the event of one of those late frosts.

USDA Zone Info for Killeen

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 Killeen

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