The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant basil in Campbell can be determined by checking out the USDA zone info.

Planting Calendar for Basil

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

It's a bad idea to plant basil until after all chance of frost has passed because they require warm weather.

The earliest that you can plant basil 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 basil and expect a good harvest is probably September. You probably don't want to wait any later than that or else your basil may not have a chance to fully mature. You can get started a few weeks earlier by starting your basil indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Campbell. It might get as low as 25°F during the coldest months of winter.

Keep in mind that USDA zone info for Campbell is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Campbell you get surprised by a frost after February 15 be ready to cover your basil if you have a late frost.

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.