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.

In Cupertino you can determine when it's possible to plant canna by reviewing the USDA zone info.

Planting Calendar for Canna

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

It's probably not a good idea to plant canna until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant canna in Cupertino 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 canna and expect a good harvest is probably September. Any later than that and your canna may not have a chance to fully mature. Starting your canna indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Cupertino. In the coldest months of winter you can expect an average low temperature of 25°F.

Keep in mind that USDA zone info for Cupertino is not always accurate and the actual date of last frost is different every year. Half of the time in Cupertino you get surprised by a frost after February 15 so always be ready to protect your canna in the event of one of those late frosts.

USDA Zone Info for Cupertino

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 Cupertino

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