The USDA Zone info is a great tool for gardeners to help us figure out 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 reviewing the USDA zone info for American Canyon you should be able to determine when it's a good idea to plant begonias.

Planting Calendar for Begonias

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

Since begonias do not do well in cold weather you really should wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant begonias 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 begonias and expect a good harvest is probably September. Any later than that and your begonias may not have a chance to really do well. Starting your begonias indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on February 15 in American Canyon. In the coldest months of winter you can expect an average low temperature of 25°F.

Always keep in mind that USDA zone info for American Canyon is just an average and the actual date of last frost changes from year to year. Since half of the time in American Canyon it frosts late in the year after February 15 be ready to cover your begonias if you have one of those late frosts.

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.