Before planting it is a good idea to find your USDA Zone info to estimate 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.

In International Falls you can figure out when you can plant scutellaria by referring to 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 probably a bad idea to plant scutellaria until after all chance of frost has passed because they require warm weather.

The earliest that you can plant scutellaria in International Falls 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. You can get started a little bit earlier by starting your scutellaria indoors.

Last Frost Date

On average the last frost is on May 15 in International Falls. You should expect an average low temperature of -40°F in the coldest months of winter.

Always keep in mind that USDA zone info for International Falls is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in International Falls you get surprised by a frost after May 15 be ready to protect your scutellaria if you have a late frost.

USDA Zone Info for International Falls

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 International Falls

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