Before planting it is a good idea to find your USDA Zone info to figure out 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.

A way of making a decision about when you can plant sutera is to refer to the USDA zone info for Calistoga.

Planting Calendar for Sutera

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

You can plant sutera a bit earlier in the year because they are one of those plants that can tolerate a tiny bit of cold weather.

The earliest that you can plant sutera 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 sutera and expect a good harvest is probably September. You probably don't want to wait any later than that or else your sutera may not have a chance to grow to maturity. Starting your sutera indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Calistoga. In the coldest months of winter you should expect an average low temperature of 20°F.

It's important to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Calistoga and it changes from year to year. Since half of the time in Calistoga you get surprised by a frost after February 15 be ready to cover your sutera 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.