One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

One way of determining when it's possible to plant cauliflower is to refer to the USDA zone info for Jackson.

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 means that you can start planting them earlier than plants that are more sensitive to the cold.

The earliest that you can plant cauliflower in Jackson 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. You probably don't want to wait any later than that or else your cauliflower may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your cauliflower indoors.

Last Frost Date

The average date of last frost is February 15 in Jackson. In the coldest months of winter you should expect an average low temperature of 20°F.

Keep in mind that USDA zone info for Jackson may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Jackson last frost occurs after February 15 be ready to cover your cauliflower if you have one of those late frosts.

USDA Zone Info for Jackson

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Jackson

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