The USDA Zone info is a great tool for gardeners to help us determine 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 determine when to plant perilla by referring to the USDA zone info for San Juan Capistrano.

Planting Calendar for Perilla

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

Perilla are not cold tolerant which tells us that it is important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant perilla in San Juan Capistrano 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 perilla and expect a good harvest is probably September. You probably don't want to wait any later than that or else your perilla may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your perilla indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in San Juan Capistrano. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for San Juan Capistrano is an average the actual date of last frost will vary from year to year. Since half of the time in San Juan Capistrano it frosts late in the year after January 31 be ready to protect your perilla if you have a late frost.

USDA Zone Info for San Juan Capistrano

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 San Juan Capistrano

You may be interested in your other planting guides for San Juan Capistrano.