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.

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

Planting Calendar for Coleus

Frost tolerance for coleus:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since coleus require warm weather it's necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant coleus 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 coleus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your coleus may not have a chance to fully mature. You can get started a little bit earlier by starting your coleus indoors.

Last Frost Date

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

It's important to remember that USDA zone info for Calistoga is just an average and the actual date of last frost is different every year. Half of the time in Calistoga last frost occurs after February 15 so make sure that you are prepared to cover your coleus in the event of a surprise 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.