The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. 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 Presidio should be reviewed 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 has passed.

Since perilla are not cold tolerant you must wait until after the last frost before you can plant them.

The earliest that you can plant perilla in Presidio 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 really do well. 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 Presidio. It might get as low as 20°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Presidio and it can change quite a bit from year to year. Half of the time in Presidio there is a last frost after February 15 so make sure that you are prepared to cover your perilla if you have one of those late frosts.

USDA Zone Info for Presidio

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 Presidio

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