One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Rialto you will be able to estimate when to plant snap beans.

Planting Calendar for Snap beans

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

Since snap beans require warm weather it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant snap beans in Rialto 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 really do well. Starting your snap beans indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Rialto. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Rialto is just an average the actual date of last frost will vary from year to year. Since half of the time in Rialto it frosts late in the year after January 31 be ready to cover your snap beans if you have a late frost.

USDA Zone Info for Rialto

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 Rialto

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