One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant heuchera in Harwood Heights can 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.

Heuchera do well in some cold which means that you can plant them a little bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant heuchera in Harwood Heights 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. 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

The average date of last frost is April 15 in Harwood Heights. It might get as low as -15°F during the coldest months of winter.

Remember that USDA zone info for Harwood Heights is not always accurate and the actual date of last frost is different every year. Half of the time in Harwood Heights it frosts late in the year after April 15 so make sure that you are prepared to protect your heuchera if you have one of those late frosts.

USDA Zone Info for Harwood Heights

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Harwood Heights

You may be interested in your other planting guides for Harwood Heights.