One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Sonoma can be used to estimate when you can plant hamburg root parsley.

Planting Calendar for Hamburg root parsley

Frost tolerance for hamburg root parsley:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant hamburg root parsley a little bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant hamburg root parsley in Sonoma 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 hamburg root parsley and expect a good harvest is probably October. If you wait any later than that and your hamburg root parsley may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your hamburg root parsley indoors.

Last Frost Date

In Sonoma the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Sonoma may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Sonoma there is a last frost after February 15 be ready to protect your hamburg root parsley in the event of a late frost.

USDA Zone Info for Sonoma

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 Sonoma

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