One of the first steps you take when you are estimating 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.

You should be able to figure out when it's the best time to plant flowering maple by using the USDA zone info for San Diego.

Planting Calendar for Flowering Maple

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

Since flowering maple require warm weather you must wait until after the last frost before you can plant them.

The earliest that you can plant flowering maple in San Diego 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 flowering maple and expect a good harvest is probably September. You probably don't want to wait any later than that or else your flowering maple may not have a chance to really do well. You can get started a couple of weeks earlier by starting your flowering maple indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in San Diego. In the coldest months of winter you can expect an average low temperature of 35°F.

Since the USDA zone info for San Diego is an average the actual date of last frost will vary from year to year. Since half of the time in San Diego last frost occurs after January 31 be ready to protect your flowering maple if you have one of those late frosts.

USDA Zone Info for San Diego

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in San Diego

You may be interested in your other planting guides for San Diego.