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 it's a good idea to plant perilla is to refer to the USDA zone info for Rosenberg.

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 are not cold tolerant it's necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant perilla in Rosenberg 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 grow to maturity. You can get started a few weeks earlier by starting your perilla indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Rosenberg. It might get as low as 20°F during the coldest months of winter.

Keep in mind that USDA zone info for Rosenberg may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Rosenberg it frosts late in the year after February 15 so be sure to be ready to cover your perilla if you have one of those late frosts.

USDA Zone Info for Rosenberg

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 Rosenberg

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