One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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 a good idea to plant tropical hibiscus is to consult the USDA zone info for Hilliard.

Planting Calendar for Tropical Hibiscus

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

It's a bad idea to plant tropical hibiscus until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant tropical hibiscus in Hilliard 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. You probably don't want to wait any later than that or else your tropical hibiscus may not have a chance to fully mature. You can get started a little bit earlier by starting your tropical hibiscus indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Hilliard. In the coldest months of winter you can expect an average low temperature of -10°F.

It's important to remember that USDA zone info for Hilliard is just an average and the actual date of last frost changes from year to year. Half of the time in Hilliard you get a frost after April 15 so be sure to be ready to protect your tropical hibiscus if you have a surprise late frost.

USDA Zone Info for Hilliard

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Hilliard

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