The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for American Canyon it's possible to determine when you can plant plectranthus.

Planting Calendar for Plectranthus

Frost tolerance for plectranthus:	Not tolerant of frost.
When to plant:	After the last frost.

Since plectranthus do not do well in cold weather it's important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant plectranthus in American Canyon 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 plectranthus and expect a good harvest is probably September. If you wait any later than that and your plectranthus may not have a chance to fully mature. You can get started a little bit earlier by starting your plectranthus indoors.

Last Frost Date

In American Canyon the average date of last frost happens on February 15. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for American Canyon is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in American Canyon there is a last frost after February 15 so just be sure to be ready to cover your plectranthus if you have a surprise late frost.

USDA Zone Info for American Canyon

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in American Canyon

You may be interested in your other planting guides for American Canyon.