The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant heuchera in Great Falls should be determined 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.

You can plant heuchera a bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

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

The last month that you can plant heuchera and expect a good harvest is probably August. Any later than that and your heuchera may not have a chance to grow to maturity. You can get started a little bit earlier by starting your heuchera indoors.

Last Frost Date

In Great Falls the average date of last frost happens on May 15. In the coldest months of winter you should expect an average low temperature of -30°F.

Just be sure to remember that USDA zone info for Great Falls is just an average and the actual date of last frost is different every year. Since half of the time in Great Falls you get a frost after May 15 be ready to protect your heuchera in the event of one of those late frosts.

USDA Zone Info for Great Falls

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Great Falls

You may be interested in your other planting guides for Great Falls.