The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of getting a good idea when to plant radicchio is to look at the USDA zone info for Gurnee.

Planting Calendar for Radicchio

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

Radicchio do well in moderate cold which means that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant radicchio in Gurnee 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 radicchio and expect a good harvest is probably September. If you wait any later than that and your radicchio may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your radicchio indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Gurnee. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Gurnee may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Gurnee you get surprised by a frost after April 15 so always be ready to cover your radicchio in the event of a late frost.

USDA Zone Info for Gurnee

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 Gurnee

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