Before planting it is a good idea to find your USDA Zone info to estimate 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 Hawthorne you can figure out when it's the best time to plant hamburg root parsley by checking out the USDA zone info.

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.

Hamburg root parsley do well in moderate cold which means that you can start planting them earlier than more sensitive plants.

The earliest that you can plant hamburg root parsley in Hawthorne 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. You probably don't want to wait any later than that or else your hamburg root parsley may not have a chance to grow to maturity. Starting your hamburg root parsley indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is January 31 in Hawthorne. It might get as low as 35°F during the coldest months of winter.

Since the USDA zone info for Hawthorne may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Hawthorne there is a last frost after January 31 be ready to protect your hamburg root parsley if you have a late frost.

USDA Zone Info for Hawthorne

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Hawthorne

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