The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of estimating when it's the best time to plant asparagus lettuce is to examine the USDA zone info for Colusa.

Planting Calendar for Asparagus lettuce

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

You really shouldn't plant asparagus lettuce until after all chance of frost has passed because they require warm weather.

The earliest that you can plant asparagus lettuce in Colusa 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. Any later than that and your asparagus lettuce may not have a chance to really do well. Starting your asparagus lettuce indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Colusa the average date of last frost happens on February 15. In the coldest months of winter you can expect an average low temperature of 25°F.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Colusa and it is different every year. Half of the time in Colusa there is a last frost after February 15 so be sure to be ready to protect your asparagus lettuce if you have a surprise late frost.

USDA Zone Info for Colusa

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 Colusa

You may be interested in your other planting guides for Colusa.