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

You should be able to estimate when it's a good idea to plant matricaria by using the USDA zone info for Richfield.

Planting Calendar for Matricaria

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

Matricaria do well in some cold which tells us that you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant matricaria in Richfield 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 grow to maturity. You can get started a few weeks earlier by starting your matricaria indoors.

Last Frost Date

The average date of last frost is April 15 in Richfield. It might get as low as -10°F during the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Richfield and it will vary from year to year. Half of the time in Richfield there is a last frost after April 15 so always be ready to cover your matricaria if you have a surprise late frost.

USDA Zone Info for Richfield

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 Richfield

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