One of the first steps you take when you are making a decision about 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 first opportunity to plant fanflower in River Forest can be figured out by looking at the USDA zone info.

Planting Calendar for Fanflower

Frost tolerance for fanflower:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since fanflower are not cold tolerant you need to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant fanflower in River Forest 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 fanflower and expect a good harvest is probably August. You probably don't want to wait any later than that or else your fanflower may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your fanflower indoors.

Last Frost Date

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

Always keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for River Forest and it is different every year. Since half of the time in River Forest it frosts late in the year after April 15 be ready to cover your fanflower in the event of one of those late frosts.

USDA Zone Info for River Forest

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 River Forest

You may be interested in your other planting guides for River Forest.