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.

A common way of figuring out when you can plant heuchera is to examine the USDA zone info for Bethalto.

Planting Calendar for Heuchera

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

Heuchera can survive in a little bit of cold which tells us that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant heuchera in Bethalto 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 grow to maturity. Starting your heuchera indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Bethalto. In the coldest months of winter you can expect an average low temperature of -10°F.

Remember that USDA zone info for Bethalto is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Bethalto there is a last frost after April 15 be ready to cover your heuchera if you have a late frost.

USDA Zone Info for Bethalto

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 Bethalto

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