The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Sullivan you can figure out when to plant firebush by looking at the USDA zone info.

Planting Calendar for Firebush

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

It's probably not a good idea to plant firebush until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant firebush in Sullivan 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 firebush and expect a good harvest is probably August. You probably don't want to wait any later than that or else your firebush may not have a chance to fully mature. Starting your firebush indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Sullivan the average date of last frost happens on April 15. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Sullivan is an average the actual date of last frost changes from year to year. Since half of the time in Sullivan you get a frost after April 15 be ready to protect your firebush in the event of a late frost.

USDA Zone Info for Sullivan

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 Sullivan

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