When to Plant Perilla in Zone 9a

One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Zone 9a should be reffered to in order to determine when to plant perilla.

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Planting Calendar for Perilla

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

It's a bad idea to plant perilla until after all chance of frost has passed because they do not do well in cold weather.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant perilla
Possibly ok, but a risky time to plant perilla
Probably not a good time to plant perilla

The earliest that you can plant perilla in Zone 9a 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. You probably don't want to wait any later than that or else your perilla may not have a chance to fully mature. You can get started a few weeks earlier by starting your perilla indoors.

Last Frost Date

In Zone 9a the average date of last frost happens on February 15. In the coldest months of winter you can expect an average low temperature of 20°F.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Zone 9a and it will vary from year to year. Half of the time in Zone 9a there is a last frost after February 15 so be sure to be ready to protect your perilla if you have a late frost.

USDA Zone Info for Zone 9a

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 Low20°F
Highest Expected Low25°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 Zone 9a

You may be interested in your other planting guides for Zone 9a.