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.

In Rancho Mirage you can estimate when you can plant asparagus lettuce by referring to the USDA zone info.

Planting Calendar for Asparagus lettuce

Frost tolerance for asparagus lettuce:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably a bad idea to plant asparagus lettuce until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant asparagus lettuce in Rancho Mirage 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 asparagus lettuce and expect a good harvest is probably September. If you wait any later than that and your asparagus lettuce may not have a chance to fully mature. You can get started a little bit earlier by starting your asparagus lettuce indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Rancho Mirage. In the coldest months of winter you can expect an average low temperature of 25°F.

Keep in mind that USDA zone info for Rancho Mirage may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Rancho Mirage there is a last frost after February 15 so just be sure to be ready to cover your asparagus lettuce in the event of a surprise late frost.

USDA Zone Info for Rancho Mirage

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Rancho Mirage

You may be interested in your other planting guides for Rancho Mirage.