Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for La Mesa it's a good idea to estimate when you can plant garden cress.

Planting Calendar for Garden cress

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

Since garden cress require warm weather it's necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant garden cress in La Mesa is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant garden cress and expect a good harvest is probably September. You probably don't want to wait any later than that or else your garden cress may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your garden cress indoors.

Last Frost Date

The average date of last frost is January 31 in La Mesa. In the coldest months of winter you should expect an average low temperature of 30°F.

Since the USDA zone info for La Mesa is just an average the actual date of last frost will vary from year to year. Half of the time in La Mesa last frost occurs after January 31 so be sure to be ready to protect your garden cress in the event of one of those late frosts.

USDA Zone Info for La Mesa

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 La Mesa

You may be interested in your other planting guides for La Mesa.