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.

You will be able to determine when it's the best time to plant chervil by referring to the USDA zone info for Whittier.

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 do ok in moderate cold which means that you can start planting them slightly earlier than more sensitive plants.

The earliest that you can plant chervil in Whittier 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. Any later than that and your chervil may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your chervil indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Whittier. In the coldest months of winter you can expect an average low temperature of 30°F.

Remember that USDA zone info for Whittier is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Whittier you get surprised by a frost after January 31 so just be sure to be ready to cover your chervil in the event of a surprise late frost.

USDA Zone Info for Whittier

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Whittier

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