The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant chervil in Costa Mesa can be determined by looking at the USDA zone info.

Planting Calendar for Chervil

Frost tolerance for chervil:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Chervil can survive in some cold which means that you can plant them slightly earlier in the year than other frost tender plants.

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

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Costa Mesa. It might get as low as 35°F during the coldest months of winter.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Costa Mesa and it is different every year. Since half of the time in Costa Mesa you get a frost after January 31 be ready to protect your chervil if you have one of those late frosts.

USDA Zone Info for Costa Mesa

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 Costa Mesa

You may be interested in your other planting guides for Costa Mesa.