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.

In San Luis you can determine when 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 are one of those plants that can tolerate a little bit of cold weather which tells us that you can plant them earlier than other frost tender plants.

The earliest that you can plant hamburg root parsley in San Luis 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 really do well. You can get started a few weeks earlier by starting your hamburg root parsley indoors.

Last Frost Date

The average date of last frost is January 31 in San Luis. In the coldest months of winter you can expect an average low temperature of 30°F.

It's important to remember that USDA zone info for San Luis is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in San Luis there is a last frost after January 31 so make sure that you are prepared to cover your hamburg root parsley in the event of a surprise late frost.

USDA Zone Info for San Luis

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in San Luis

You may be interested in your other planting guides for San Luis.