One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can estimate when you can plant radicchio in Cornelius by using 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.

You can plant radicchio a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant radicchio in Cornelius 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 fully mature. You can get started a few weeks earlier by starting your radicchio indoors.

Last Frost Date

The average date of last frost is March 15 in Cornelius. In the coldest months of winter you should expect an average low temperature of 15°F.

Since the USDA zone info for Cornelius is just an average the actual date of last frost will vary from year to year. Half of the time in Cornelius it frosts late in the year after March 15 so be sure to be ready to cover your radicchio in the event of a late frost.

USDA Zone Info for Cornelius

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Cornelius

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