One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. 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 Lemon Grove should be reviewed to figure out when to plant purple rock cress.

Planting Calendar for Purple Rock Cress

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

Purple Rock Cress do well in a bit of cold which means that you can plant them quite a bit earlier in the year than more sensitive plants.

The earliest that you can plant purple rock cress in Lemon Grove 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 purple rock cress and expect a good harvest is probably October. You probably don't want to wait any later than that or else your purple rock cress may not have a chance to fully mature. Starting your purple rock cress indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on January 31 in Lemon Grove. In the coldest months of winter you can expect an average low temperature of 30°F.

Always keep in mind that USDA zone info for Lemon Grove is not always accurate and the actual date of last frost changes from year to year. Half of the time in Lemon Grove you get surprised by a frost after January 31 so make sure that you are ready to cover your purple rock cress in the event of a surprise late frost.

USDA Zone Info for Lemon Grove

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 Lemon Grove

You may be interested in your other planting guides for Lemon Grove.