One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant canna in La Mesa should be estimated by reviewing the USDA zone info.

Planting Calendar for Canna

Frost tolerance for canna:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant canna until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant canna in La Mesa 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 canna and expect a good harvest is probably September. You probably don't want to wait any later than that or else your canna may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your canna indoors.

Last Frost Date

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

Since the USDA zone info for La Mesa is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in La Mesa you get surprised by a frost after January 31 be ready to cover your canna if you have a surprise late frost.

USDA Zone Info for La Mesa

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 La Mesa

You may be interested in your other planting guides for La Mesa.