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

The USDA zone info for Simi Valley should be read to figure out when it's a good idea to plant perilla.

Planting Calendar for Perilla

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

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

The earliest that you can plant perilla in Simi Valley 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 grow to maturity. You can get started a couple of weeks earlier by starting your perilla indoors.

Last Frost Date

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

Keep in mind that USDA zone info for Simi Valley is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Simi Valley it frosts late in the year after February 15 be ready to protect your perilla in the event of a late frost.

USDA Zone Info for Simi Valley

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 Simi Valley

You may be interested in your other planting guides for Simi Valley.