The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Calistoga can be used to determine when to plant lettuce.

Planting Calendar for Lettuce

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

Lettuce do well in moderate cold which tells us that you can get them planted earlier than more sensitive plants.

The earliest that you can plant lettuce in Calistoga is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant lettuce and expect a good harvest is probably October. If you wait any later than that and your lettuce may not have a chance to really do well. If you are starting your lettuce indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Calistoga. It might get as low as 20°F during the coldest months of winter.

Keep in mind that USDA zone info for Calistoga is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Calistoga you get surprised by a frost after February 15 be ready to protect your lettuce in the event of one of those late frosts.

USDA Zone Info for Calistoga

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 Calistoga

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