One of the first steps you take when you are making a decision about your gardening schedule is find your 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.

In Zone 3a you can estimate when it's possible to plant scutellaria by looking at the USDA zone info.

Planting Calendar for Scutellaria

Frost tolerance for scutellaria:	Not tolerant of frost.
When to plant:	After the last frost.

Since scutellaria require warm weather you need to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant scutellaria in Zone 3a is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant scutellaria and expect a good harvest is probably August. Any later than that and your scutellaria may not have a chance to grow to maturity. Starting your scutellaria indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Zone 3a the average date of last frost happens on May 15. In the coldest months of winter you should expect an average low temperature of -40°F.

Remember that USDA zone info for Zone 3a is an average and the actual date of last frost changes from year to year. Half of the time in Zone 3a you get surprised by a frost after May 15 so just be sure to be ready to cover your scutellaria in the event of a surprise late frost.

USDA Zone Info for Zone 3a

Here is the info for USDA Zone 3a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-40°F
Highest Expected Low	-35°F

This means that on a really cold year, the coldest it will get is -40°F. On most years you should be prepared to experience lows near -35°F.

Plants to Grow in Zone 3a

You may be interested in your other planting guides for Zone 3a.