One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Cottage Grove you can estimate when it's possible to plant ajuga by using 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 pretty solid cold which tells us that you can plant them a lot earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant ajuga in Cottage Grove 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 grow to maturity. You can get started a few weeks earlier by starting your ajuga indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Cottage Grove. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Cottage Grove is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Cottage Grove last frost occurs after March 15 so be sure to be ready to protect your ajuga if you have a surprise late frost.

USDA Zone Info for Cottage Grove

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Cottage Grove

You may be interested in your other planting guides for Cottage Grove.