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.

You should be able to estimate when to plant tomatos by looking at the USDA zone info for Campbell.

Planting Calendar for Tomatos

Frost tolerance for tomatos:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's a bad idea to plant tomatos until after the last frost because they are not cold tolerant.

The earliest that you can plant tomatos in Campbell 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 tomatos and expect a good harvest is probably September. You probably don't want to wait any later than that or else your tomatos may not have a chance to really do well. Starting your tomatos indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Campbell. In the coldest months of winter you should expect an average low temperature of 25°F.

Just be sure to remember that USDA zone info for Campbell is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Campbell last frost occurs after February 15 so always be ready to protect your tomatos in the event of one of those late frosts.

USDA Zone Info for Campbell

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 Campbell

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