One of the first steps you take when you are figuring out 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.

By reviewing the USDA zone info for Glen Ellyn you will be able to figure out when it's a good idea to plant fanflower.

Planting Calendar for Fanflower

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

It's probably not a good idea to plant fanflower until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant fanflower in Glen Ellyn 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. Any later than that and your fanflower may not have a chance to really do well. Starting your fanflower indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Since the USDA zone info for Glen Ellyn is an average the actual date of last frost changes from year to year. Since half of the time in Glen Ellyn you get surprised by a frost after April 15 be ready to cover your fanflower if you have a surprise late frost.

USDA Zone Info for Glen Ellyn

Here is the info for USDA Zone 5b.

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

Plants to Grow in Glen Ellyn

You may be interested in your other planting guides for Glen Ellyn.