The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Rochelle you can estimate when it's possible to plant doronicum by reviewing 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.

You can plant doronicum just a bit earlier in the year because they do well in moderate cold.

The earliest that you can plant doronicum in Rochelle 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. You probably don't want to wait any later than that or else your doronicum may not have a chance to really do well. Starting your doronicum indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Rochelle the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -20°F.

Since the USDA zone info for Rochelle is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Rochelle there is a last frost after April 15 be ready to protect your doronicum if you have a late frost.

USDA Zone Info for Rochelle

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Rochelle

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