Before planting it is a good idea to find your USDA Zone info to determine 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 earliest that you can plant bells of ireland in Alameda can be estimated by using the USDA zone info.

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 do ok in mild cold which means that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant bells of ireland in Alameda 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 grow to maturity. You can get started a few weeks earlier by starting your bells of ireland indoors.

Last Frost Date

On average the last frost has passed is on January 31 in Alameda. In the coldest months of winter you should expect an average low temperature of 30°F.

Since the USDA zone info for Alameda is an average the actual date of last frost is different every year. Half of the time in Alameda last frost occurs after January 31 so make sure that you are prepared to protect your bells of ireland in the event of a late frost.

USDA Zone Info for Alameda

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Alameda

You may be interested in your other planting guides for Alameda.