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.

The first opportunity to plant heuchera in Carlisle can be figured out by checking out the USDA zone info.

Planting Calendar for Heuchera

Frost tolerance for heuchera:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Heuchera are moderately cold tolerant which tells us that you can get them planted earlier than more sensitive plants.

The earliest that you can plant heuchera in Carlisle is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant heuchera and expect a good harvest is probably September. You probably don't want to wait any later than that or else your heuchera may not have a chance to fully mature. Starting your heuchera indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Carlisle and it can change quite a bit from year to year. Half of the time in Carlisle there is a last frost after April 15 so be sure to be ready to protect your heuchera in the event of a surprise late frost.

USDA Zone Info for Carlisle

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Carlisle

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