The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. 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 matricaria in Mercer Island should be estimated by using the USDA zone info.

Planting Calendar for Matricaria

Frost tolerance for matricaria:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Matricaria are moderately cold tolerant which means that you can get them planted earlier than more sensitive plants.

The earliest that you can plant matricaria in Mercer Island is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant matricaria and expect a good harvest is probably September. If you wait any later than that and your matricaria may not have a chance to really do well. You can get started a couple of weeks earlier by starting your matricaria indoors.

Last Frost Date

On average the last frost is on March 15 in Mercer Island. In the coldest months of winter you should expect an average low temperature of 15°F.

Since the USDA zone info for Mercer Island is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Mercer Island you get a frost after March 15 so be sure to be ready to cover your matricaria in the event of a surprise late frost.

USDA Zone Info for Mercer Island

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 Mercer Island

You may be interested in your other planting guides for Mercer Island.