When to Plant Radicchio in Zone 6a

One of the first steps you take when you are making a decision about your gardening schedule is find your 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 figure out when it's a good idea to plant radicchio in Zone 6a 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 do well in moderate cold which tells us that you can start planting them earlier than more sensitive plants.

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 Zone 6a 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. You probably don't want to wait any later than that or else your radicchio may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your radicchio indoors.

Last Frost Date

The average date of last frost is April 15 in Zone 6a. It might get as low as -10°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost is an average because it is based on the USDA zone info for Zone 6a and it can change quite a bit from year to year. Since half of the time in Zone 6a there is a last frost after April 15 be ready to protect your radicchio in the event of a late frost.

USDA Zone Info for Zone 6a

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-10°F
Highest Expected Low-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Zone 6a

You may be interested in your other planting guides for Zone 6a.