Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Sonoma you can figure out when it's the best time to plant flowering maple by using the USDA zone info.

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 have to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant flowering maple in Sonoma 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. If you wait any later than that and your flowering maple may not have a chance to fully mature. If you are starting your flowering maple indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Sonoma. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Sonoma may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Sonoma last frost occurs after February 15 be ready to cover your flowering maple in the event of a surprise late frost.

USDA Zone Info for Sonoma

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 Sonoma

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