One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By using the USDA zone info for American Canyon it's possible to estimate when it's possible to plant bells of ireland.

Planting Calendar for Bells of Ireland

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

Bells of Ireland can survive in a tiny bit of cold which tells us that you can plant them slightly earlier in the year than other frost tender plants.

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

Last Frost Date

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

Since the USDA zone info for American Canyon is an average the actual date of last frost will vary from year to year. Half of the time in American Canyon you get a frost after February 15 so be sure to be ready to cover your bells of ireland in the event of 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.