When to Plant Scutellaria in Silvis, IL

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 first opportunity to plant scutellaria in Silvis can be figured out by reviewing 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 are not cold tolerant you have to wait until after the last frost when the weather gets warmer before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant scutellaria
Possibly ok, but a risky time to plant scutellaria
Probably not a good time to plant scutellaria

The earliest that you can plant scutellaria in Silvis 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 grow to maturity. Starting your scutellaria indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Silvis. It might get as low as -15°F during the coldest months of winter.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Silvis and it will vary from year to year. Half of the time in Silvis you get surprised by a frost after April 15 so always be ready to cover your scutellaria if you have a late frost.

USDA Zone Info for Silvis

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 Silvis

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