One of the best tools that you have as gardeners to help us figure out 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 estimate when you can plant chicory by using the USDA zone info for Napa.

Planting Calendar for Chicory

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

Chicory are one of those plants that can tolerate a little bit of cold weather 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 chicory in Napa 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 chicory and expect a good harvest is probably October. Any later than that and your chicory may not have a chance to fully mature. If you are starting your chicory indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on February 15 in Napa. It might get as low as 25°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Napa and it can change quite a bit from year to year. Half of the time in Napa you get a frost after February 15 so make sure that you are prepared to cover your chicory if you have a late frost.

USDA Zone Info for Napa

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°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 30°F.

Plants to Grow in Napa

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