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.

The first chance to plant salsify in Calistoga should be determined by using the USDA zone info.

Planting Calendar for Salsify

Frost tolerance for salsify:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since salsify do ok in moderate cold you can plant them slightly earlier in the year than more sensitive plants.

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

Last Frost Date

On average the last frost is on February 15 in Calistoga. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Calistoga is an average the actual date of last frost is different every year. Since half of the time in Calistoga last frost occurs after February 15 be ready to protect your salsify 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.