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 Jackson you can estimate when to plant fennel by referring to the USDA zone info.

Planting Calendar for Fennel

Frost tolerance for fennel:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since fennel do well in cold you can plant them quite a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant fennel in Jackson is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant fennel and expect a good harvest is probably September. You probably don't want to wait any later than that or else your fennel may not have a chance to grow to maturity. Starting your fennel indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Jackson. You can expect an average low temperature of -20°F in the coldest months of winter.

It's important to remember that USDA zone info for Jackson is just an average and the actual date of last frost is different every year. Half of the time in Jackson you get a frost after April 15 so make sure that you are prepared to cover your fennel in the event of a late frost.

USDA Zone Info for Jackson

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°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 -15°F.

Plants to Grow in Jackson

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