One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Lake Oswego can be read to figure out when it's possible to plant scutellaria.

Planting Calendar for Scutellaria

Frost tolerance for scutellaria:	Not tolerant of frost.
When to plant:	After the last 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 Lake Oswego 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 grow to maturity. Starting your scutellaria indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Lake Oswego. You can expect an average low temperature of 15°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Lake Oswego 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 Lake Oswego there is a last frost after March 15 be ready to cover your scutellaria if you have a surprise late frost.

USDA Zone Info for Lake Oswego

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Lake Oswego

You may be interested in your other planting guides for Lake Oswego.