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.

A way of getting a good idea when it's possible to plant swan river daisy is to examine the USDA zone info for Mattoon.

Planting Calendar for Swan River Daisy

Frost tolerance for swan river daisy:	Not tolerant of frost.
When to plant:	After the last frost.

Swan River Daisy require warm weather which means that it is necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant swan river daisy in Mattoon 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 swan river daisy and expect a good harvest is probably August. If you wait any later than that and your swan river daisy may not have a chance to grow to maturity. If you are starting your swan river daisy indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Mattoon the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -10°F.

It's important to remember that USDA zone info for Mattoon is an average and the actual date of last frost will vary from year to year. Half of the time in Mattoon last frost occurs after April 15 so be sure to be ready to protect your swan river daisy in the event of a late frost.

USDA Zone Info for Mattoon

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 Mattoon

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