The USDA Zone info is a great tool for gardeners to help us estimate 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.

In Portage you can determine when it's possible to plant ajuga by reviewing 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 tend to make it in cold weather which tells us that you can plant them a lot earlier in the year than other plants that might not handle the cold.

The earliest that you can plant ajuga in Portage 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. 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 couple of weeks earlier.

Last Frost Date

In Portage the average date of last frost happens on April 15. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Portage may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Portage it frosts late in the year after April 15 so make sure that you are ready to cover your ajuga in the event of a surprise late frost.

USDA Zone Info for Portage

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Portage

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