One of the first steps you take when you are determining 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.

In Robbins you can estimate when it's possible to plant doronicum by looking at 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 a little bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant doronicum in Robbins 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 grow to maturity. You can get started a few weeks earlier by starting your doronicum indoors.

Last Frost Date

On average the last frost is on April 15 in Robbins. You can expect an average low temperature of -10°F in the coldest months of winter.

Keep in mind that USDA zone info for Robbins may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Robbins you get a frost after April 15 so just be sure to be ready to cover your doronicum in the event of one of those late frosts.

USDA Zone Info for Robbins

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 Robbins

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