Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of making a decision about when it's a good idea to plant scutellaria is to consult the USDA zone info for Superior.

Planting Calendar for Scutellaria

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

You really shouldn't plant scutellaria until after the last frost because they are not cold tolerant.

The earliest that you can plant scutellaria in Superior 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. If you wait any later than that and your scutellaria may not have a chance to grow to maturity. If you are starting your scutellaria indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Superior. You should expect an average low temperature of -25°F in the coldest months of winter.

Keep in mind that USDA zone info for Superior may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Superior you get surprised by a frost after May 15 be ready to cover your scutellaria in the event of a late frost.

USDA Zone Info for Superior

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Superior

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