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

The first opportunity to plant trachelium in Calistoga can be figured out by checking out the USDA zone info.

Planting Calendar for Trachelium

Frost tolerance for trachelium:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Trachelium are not cold tolerant which tells us that you really should wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant trachelium in Calistoga 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 trachelium and expect a good harvest is probably September. You probably don't want to wait any later than that or else your trachelium may not have a chance to really do well. Starting your trachelium indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

It's important to remember that USDA zone info for Calistoga is not always accurate and the actual date of last frost is different every year. Half of the time in Calistoga you get a frost after February 15 so be sure to be ready to protect your trachelium in the event of a late frost.

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.