The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Niles you can figure out when it's possible to plant ajuga by referring to the USDA zone info.

Planting Calendar for Ajuga

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

Ajuga are one of those plants that can tolerate quite a bit of cold weather which means that you can get them planted much earlier than more sensitive plants.

The earliest that you can plant ajuga in Niles 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. If you wait any later than that and your ajuga may not have a chance to fully mature. If you are starting your ajuga indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Niles. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Niles is just an average the actual date of last frost will vary from year to year. Half of the time in Niles you get surprised by a frost after April 15 so make sure that you are ready to protect your ajuga if you have one of those late frosts.

USDA Zone Info for Niles

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 Niles

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