Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of estimating when you can plant perilla is to consult the USDA zone info for Orange.

Planting Calendar for Perilla

Frost tolerance for perilla:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since perilla require warm weather you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant perilla in Orange 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. Any later than that and your perilla may not have a chance to grow to maturity. Starting your perilla indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on February 15 in Orange. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Orange is just an average the actual date of last frost changes from year to year. Since half of the time in Orange last frost occurs after February 15 be ready to cover your perilla if you have a surprise late frost.

USDA Zone Info for Orange

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Orange

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