The USDA Zone info is a great tool for gardeners to help us determine 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.

A way of getting a good idea when it's possible to plant canna is to use the USDA zone info for Santa Clara.

Planting Calendar for Canna

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

Since canna do not do well in cold weather you have to wait until after the last frost before you can plant them.

The earliest that you can plant canna in Santa Clara 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. If you wait any later than that and your canna may not have a chance to grow to maturity. If you are starting your canna indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

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

Remember that USDA zone info for Santa Clara is an average and the actual date of last frost is different every year. Half of the time in Santa Clara last frost occurs after February 15 so always be ready to protect your canna if you have one of those late frosts.

USDA Zone Info for Santa Clara

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 Santa Clara

You may be interested in your other planting guides for Santa Clara.