One of the best tools that you have as gardeners to help us determine 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.

In Andover you can determine when to plant radicchio by reviewing 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.

Radicchio are moderately cold tolerant which tells us that you can start planting them earlier than plants that are more sensitive to the cold.

The earliest that you can plant radicchio in Andover 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. If you wait any later than that and your radicchio may not have a chance to really do well. 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 May 15 in Andover. It might get as low as -25°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Andover is just an average and the actual date of last frost will vary from year to year. Since half of the time in Andover you get surprised by a frost after May 15 be ready to protect your radicchio if you have a late frost.

USDA Zone Info for Andover

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Andover

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