One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's a good idea to figure out when it's possible to plant radicchio by checking out the USDA zone info for Kingsford.

Planting Calendar for Radicchio

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

Radicchio do ok in some cold which means that you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant radicchio in Kingsford is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant radicchio and expect a good harvest is probably August. Any later than that and your radicchio may not have a chance to grow to maturity. Starting your radicchio indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on May 15 in Kingsford. It might get as low as -30°F during the coldest months of winter.

Keep in mind that USDA zone info for Kingsford may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Kingsford last frost occurs after May 15 so be sure to be ready to cover your radicchio if you have a surprise late frost.

USDA Zone Info for Kingsford

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Kingsford

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