One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first chance to plant evolvulus in Medical Lake can be estimated by reviewing the USDA zone info.

Planting Calendar for Evolvulus

Frost tolerance for evolvulus:	Not tolerant of frost.
When to plant:	After the last frost.

Since evolvulus require warm weather you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant evolvulus in Medical Lake 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 evolvulus and expect a good harvest is probably August. If you wait any later than that and your evolvulus may not have a chance to really do well. You can get started a few weeks earlier by starting your evolvulus indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Medical Lake. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Medical Lake is an average the actual date of last frost is different every year. Since half of the time in Medical Lake you get a frost after April 15 be ready to cover your evolvulus if you have a surprise late frost.

USDA Zone Info for Medical Lake

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Medical Lake

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