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.

The USDA zone info for San Juan Capistrano should be read to determine when it's possible to plant rock cress.

Planting Calendar for Rock Cress

Frost tolerance for rock cress:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since rock cress are one of those plants that can tolerate quite a bit of cold weather you can plant them quite a bit earlier in the year than more sensitive plants.

The earliest that you can plant rock cress in San Juan Capistrano is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant rock cress and expect a good harvest is probably October. You probably don't want to wait any later than that or else your rock cress may not have a chance to really do well. Starting your rock cress indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is January 31 in San Juan Capistrano. You can expect an average low temperature of 30°F in the coldest months of winter.

Always keep in mind that USDA zone info for San Juan Capistrano is an average and the actual date of last frost changes from year to year. Half of the time in San Juan Capistrano it frosts late in the year after January 31 so always be ready to protect your rock cress in the event of a surprise late frost.

USDA Zone Info for San Juan Capistrano

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in San Juan Capistrano

You may be interested in your other planting guides for San Juan Capistrano.