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.

In South Houston you can figure out when it's a good idea to plant chervil by checking out 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 do ok in moderate cold which tells us that you can plant them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant chervil in South Houston 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 fully mature. You can get started a few weeks earlier by starting your chervil indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in South Houston. You should expect an average low temperature of 20°F in the coldest months of winter.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for South Houston and it changes from year to year. Half of the time in South Houston last frost occurs after February 15 so be sure to be ready to cover your chervil in the event of a late frost.

USDA Zone Info for South Houston

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in South Houston

You may be interested in your other planting guides for South Houston.