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.

The best time to plant snap beans in Costa Mesa can be estimated by using the USDA zone info.

Planting Calendar for Snap beans

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

Since snap beans require warm weather it is important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant snap beans in Costa Mesa 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 snap beans and expect a good harvest is probably September. If you wait any later than that and your snap beans may not have a chance to fully mature. You can get started a few weeks earlier by starting your snap beans indoors.

Last Frost Date

On average the last frost is on January 31 in Costa Mesa. In the coldest months of winter you can expect an average low temperature of 35°F.

Since the USDA zone info for Costa Mesa is not always accurate the actual date of last frost changes from year to year. Half of the time in Costa Mesa you get a frost after January 31 so make sure that you are ready to cover your snap beans in the event of a surprise late frost.

USDA Zone Info for Costa Mesa

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 Costa Mesa

You may be interested in your other planting guides for Costa Mesa.