When to Plant Radicchio in Stone Park, IL

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.

You can figure out when it's the best time to plant radicchio in Stone Park by looking at the USDA zone info.


Planting Calendar for Radicchio

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

Since radicchio do well in moderate cold you can plant them just a bit earlier in the year than other plants that might not handle the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant radicchio
Possibly ok, but a risky time to plant radicchio
Probably not a good time to plant radicchio

The earliest that you can plant radicchio in Stone Park 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. 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 the last frost has passed is on April 15 in Stone Park. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Stone Park is an average the actual date of last frost will vary from year to year. Since half of the time in Stone Park it frosts late in the year after April 15 be ready to cover your radicchio if you have one of those late frosts.

USDA Zone Info for Stone Park

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 Stone Park

You may be interested in your other planting guides for Stone Park.