One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Fortuna should be reviewed to estimate when it's the best time to plant cauliflower.

Planting Calendar for Cauliflower

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

Cauliflower are moderately cold tolerant which tells us that you can get them planted earlier than other frost tender plants.

The earliest that you can plant cauliflower in Fortuna 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 cauliflower and expect a good harvest is probably October. If you wait any later than that and your cauliflower may not have a chance to really do well. Starting your cauliflower indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Fortuna. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Fortuna is not always accurate the actual date of last frost is different every year. Half of the time in Fortuna you get a frost after February 15 so make sure that you are ready to protect your cauliflower in the event of one of those late frosts.

USDA Zone Info for Fortuna

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 Fortuna

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