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.

You can estimate when to plant perilla in Campbell by referring to the USDA zone info.

Planting Calendar for Perilla

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

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

The earliest that you can plant perilla 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 perilla and expect a good harvest is probably September. If you wait any later than that and your perilla may not have a chance to fully mature. Starting your perilla indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Campbell. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Campbell is not always accurate the actual date of last frost is different every year. Since half of the time in Campbell last frost occurs after February 15 be ready to protect your perilla if you have 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.