Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By referring to the USDA zone info for San Jacinto you should be able to estimate when you can plant jerusalem artichokes.

Planting Calendar for Jerusalem artichokes

Frost tolerance for jerusalem artichokes:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Jerusalem artichokes can survive in moderate cold which means that you can plant them a little earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant jerusalem artichokes in San Jacinto 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 jerusalem artichokes and expect a good harvest is probably October. If you wait any later than that and your jerusalem artichokes may not have a chance to really do well. You can get started a little bit earlier by starting your jerusalem artichokes indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in San Jacinto. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for San Jacinto is an average the actual date of last frost will vary from year to year. Since half of the time in San Jacinto there is a last frost after February 15 be ready to cover your jerusalem artichokes if you have a surprise late frost.

USDA Zone Info for San Jacinto

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 San Jacinto

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