One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In La Mesa you can figure out when it's possible to plant asparagus fern by looking at the USDA zone info.

Planting Calendar for Asparagus Fern

Frost tolerance for asparagus fern:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since asparagus fern do not do well in cold weather you must wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant asparagus fern 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 asparagus fern and expect a good harvest is probably September. Any later than that and your asparagus fern may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your asparagus fern indoors.

Last Frost Date

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

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 La Mesa and it changes from year to year. Since half of the time in La Mesa it frosts late in the year after January 31 be ready to protect your asparagus fern if you have 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.