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

The best time to plant scutellaria in Rock Falls should be estimated by using 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.

Since scutellaria do not do well in cold weather you need to wait until after the last frost before you can plant them.

The earliest that you can plant scutellaria in Rock Falls 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. Any later than that and your scutellaria may not have a chance to grow to maturity. You can get started a little bit earlier by starting your scutellaria indoors.

Last Frost Date

The average date of last frost is April 15 in Rock Falls. In the coldest months of winter you should expect an average low temperature of -15°F.

Since the USDA zone info for Rock Falls is not always accurate the actual date of last frost changes from year to year. Half of the time in Rock Falls there is a last frost after April 15 so make sure that you are ready to cover your scutellaria if you have a surprise late frost.

USDA Zone Info for Rock Falls

Here is the info for USDA Zone 5b.

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

Plants to Grow in Rock Falls

You may be interested in your other planting guides for Rock Falls.