Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of getting a good idea when it's possible to plant radicchio is to refer to the USDA zone info for La Palma.

Planting Calendar for Radicchio

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

Radicchio can survive in some cold which tells us that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant radicchio in La Palma is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant radicchio and expect a good harvest is probably October. 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 little bit earlier.

Last Frost Date

The average date of last frost is January 31 in La Palma. You should expect an average low temperature of 35°F in the coldest months of winter.

Keep in mind that USDA zone info for La Palma is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in La Palma there is a last frost after January 31 so make sure that you are ready to cover your radicchio in the event of a surprise late frost.

USDA Zone Info for La Palma

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in La Palma

You may be interested in your other planting guides for La Palma.