The USDA Zone info is a great tool for gardeners to help us determine 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 doronicum in Glen Ellyn should be estimated by using the USDA zone info.

Planting Calendar for Doronicum

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

Doronicum tend to make it in mild cold which tells us that you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant doronicum in Glen Ellyn 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 doronicum and expect a good harvest is probably September. Any later than that and your doronicum may not have a chance to really do well. You can get started a couple of weeks earlier by starting your doronicum indoors.

Last Frost Date

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

It's important to remember that USDA zone info for Glen Ellyn is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Glen Ellyn you get a frost after April 15 be ready to cover your doronicum in the event of 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.