Before planting it is a good idea to find your USDA Zone info to figure out 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.

You should be able to estimate when to plant asparagus by using the USDA zone info for Ukiah.

Planting Calendar for Asparagus

Frost tolerance for asparagus:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Asparagus tend to make it in quite a bit of cold which tells us that you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant asparagus in Ukiah is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant asparagus and expect a good harvest is probably October. You probably don't want to wait any later than that or else your asparagus may not have a chance to fully mature. Starting your asparagus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Ukiah the average date of last frost happens on February 15. It might get as low as 20°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Ukiah is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Ukiah you get a frost after February 15 be ready to protect your asparagus in the event of a late frost.

USDA Zone Info for Ukiah

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Ukiah

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