One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

The best time to plant chervil in Watertown can be estimated by using 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 mild cold which tells us that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant chervil in Watertown is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant chervil and expect a good harvest is probably August. You probably don't want to wait any later than that or else your chervil may not have a chance to grow to maturity. 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 April 15 in Watertown. It might get as low as -5°F during the coldest months of winter.

Always keep in mind that USDA zone info for Watertown is just an average and the actual date of last frost will vary from year to year. Half of the time in Watertown you get surprised by a frost after April 15 so always be ready to protect your chervil in the event of a late frost.

USDA Zone Info for Watertown

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Watertown

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