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.

A common way of determining when it's the best time to plant asparagus lettuce is to examine the USDA zone info for Walnut Creek.

Planting Calendar for Asparagus lettuce

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

Asparagus lettuce require warm weather which means that it is important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant asparagus lettuce in Walnut Creek 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. You probably don't want to wait any later than that or else your asparagus lettuce may not have a chance to grow to maturity. If you are starting your asparagus lettuce indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on February 15 in Walnut Creek. You can expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that USDA zone info for Walnut Creek is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Walnut Creek it frosts late in the year after February 15 so make sure that you are prepared to cover your asparagus lettuce if you have one of those late frosts.

USDA Zone Info for Walnut Creek

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 Walnut Creek

You may be interested in your other planting guides for Walnut Creek.