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.

The USDA zone info for Los Altos should be read to figure out when it's possible to plant flowering maple.

Planting Calendar for Flowering Maple

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

Since flowering maple are not cold tolerant you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant flowering maple in Los Altos 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 flowering maple and expect a good harvest is probably September. Any later than that and your flowering maple may not have a chance to fully mature. You can get started a little bit earlier by starting your flowering maple indoors.

Last Frost Date

On average the last frost is on February 15 in Los Altos. You should expect an average low temperature of 25°F in the coldest months of winter.

It's important to remember that USDA zone info for Los Altos is an average and the actual date of last frost changes from year to year. Since half of the time in Los Altos last frost occurs after February 15 be ready to cover your flowering maple in the event of one of those late frosts.

USDA Zone Info for Los Altos

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 Los Altos

You may be interested in your other planting guides for Los Altos.