Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Springfield you can figure out when it's a good idea to plant scutellaria by checking out the USDA zone info.

Planting Calendar for Scutellaria

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

It's a bad idea to plant scutellaria until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant scutellaria in Springfield is April. However, you really should wait until May 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 really do well. Starting your scutellaria indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Springfield. It might get as low as -10°F during the coldest months of winter.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Springfield and it changes from year to year. Since half of the time in Springfield you get surprised by a frost after April 15 be ready to protect your scutellaria if you have a surprise late frost.

USDA Zone Info for Springfield

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 Springfield

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