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.

You can estimate when it's possible to plant heuchera in Spirit Lake by reviewing 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 can survive in mild cold which tells us that you can plant them just a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant heuchera in Spirit Lake 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. You can get started a few weeks earlier by starting your heuchera indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Spirit Lake. It might get as low as -20°F during the coldest months of winter.

Always keep in mind that USDA zone info for Spirit Lake is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Spirit Lake there is a last frost after April 15 so make sure that you are ready to protect your heuchera if you have one of those late frosts.

USDA Zone Info for Spirit Lake

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Spirit Lake

You may be interested in your other planting guides for Spirit Lake.