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

By looking at the USDA zone info for Leominster you should be able to estimate when you can plant scutellaria.

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 the last frost has passed because they require warm weather.

The earliest that you can plant scutellaria in Leominster 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. You probably don't want to wait any later than that or else your scutellaria may not have a chance to fully mature. If you are starting your scutellaria indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Leominster. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Leominster may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Leominster you get a frost after April 15 so be sure to be ready to cover your scutellaria if you have a late frost.

USDA Zone Info for Leominster

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 Leominster

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