Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to determine when it's possible to plant ajuga by using the USDA zone info for Prospect Heights.

Planting Calendar for Ajuga

Frost tolerance for ajuga:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Ajuga can survive in pretty solid cold which means that you can plant them quite a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant ajuga in Prospect 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 ajuga and expect a good harvest is probably September. You probably don't want to wait any later than that or else your ajuga may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your ajuga indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Prospect Heights. You can expect an average low temperature of -15°F in the coldest months of winter.

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

USDA Zone Info for Prospect 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 Prospect Heights

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