The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of figuring out when it's possible to plant flowering maple is to consult the USDA zone info for Sunnyvale.

Planting Calendar for Flowering Maple

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

Flowering Maple do not do well in cold weather which tells us that you must wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant flowering maple in Sunnyvale 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 grow to maturity. You can get started a few weeks earlier by starting your flowering maple indoors.

Last Frost Date

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

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

USDA Zone Info for Sunnyvale

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 Sunnyvale

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