The USDA Zone info is a great tool for gardeners to help us figure out your gardening 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 Franklin you will be able to figure out when to plant nigella.

Planting Calendar for Nigella

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

You can plant nigella much earlier in the year because they do well in cold.

The earliest that you can plant nigella in Franklin 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 nigella and expect a good harvest is probably October. You probably don't want to wait any later than that or else your nigella may not have a chance to fully mature. If you are starting your nigella indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Franklin. In the coldest months of winter you can expect an average low temperature of 20°F.

Always keep in mind that USDA zone info for Franklin is just an average and the actual date of last frost will vary from year to year. Half of the time in Franklin it frosts late in the year after February 15 so be sure to be ready to cover your nigella in the event of a late frost.

USDA Zone Info for Franklin

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 Franklin

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