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.

One way of determining when to plant fanflower is to look at the USDA zone info for San Mateo.

Planting Calendar for Fanflower

Frost tolerance for fanflower:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Fanflower require warm weather which tells us that it's important to 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 fanflower in San Mateo 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 fanflower and expect a good harvest is probably September. If you wait any later than that and your fanflower may not have a chance to fully mature. You can get started a little bit earlier by starting your fanflower indoors.

Last Frost Date

On average the last frost is on January 31 in San Mateo. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for San Mateo may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in San Mateo you get a frost after January 31 be ready to protect your fanflower in the event of one of those late frosts.

USDA Zone Info for San Mateo

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 San Mateo

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