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 USDA zone info for Zone 10b can be looked at to determine when you can plant tomatos.

Planting Calendar for Tomatos

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

Tomatos are not cold tolerant which tells us that you must wait until it warms up after the last frost before you can plant them.

The earliest that you can plant tomatos in Zone 10b 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 tomatos and expect a good harvest is probably September. Any later than that and your tomatos may not have a chance to fully mature. If you are starting your tomatos indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Zone 10b the average date of last frost happens on January 31. In the coldest months of winter you can expect an average low temperature of 35°F.

Just be sure to remember that USDA zone info for Zone 10b is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Zone 10b you get a frost after January 31 so be sure to be ready to protect your tomatos in the event of a late frost.

USDA Zone Info for Zone 10b

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 Zone 10b

You may be interested in your other planting guides for Zone 10b.