One of the first steps you take when you are figuring out 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.

A way of determining when to plant chicory is to consult the USDA zone info for Prosser.

Planting Calendar for Chicory

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

Since chicory do well in moderate cold you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant chicory in Prosser 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 chicory and expect a good harvest is probably September. If you wait any later than that and your chicory may not have a chance to fully mature. Starting your chicory indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Prosser. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Prosser may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Prosser there is a last frost after April 15 so make sure that you are prepared to protect your chicory if you have one of those late frosts.

USDA Zone Info for Prosser

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Prosser

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