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

It's possible to figure out when to plant nigella by using the USDA zone info for Pleasant Prairie.

Planting Calendar for Nigella

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

Nigella do well in cold which means that you can start planting them much earlier than other frost tender plants.

The earliest that you can plant nigella in Pleasant Prairie 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 nigella and expect a good harvest is probably September. You probably don't want to wait any later than that or else your nigella may not have a chance to grow to maturity. If you are starting your nigella indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Pleasant Prairie. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Pleasant Prairie is just an average the actual date of last frost is different every year. Half of the time in Pleasant Prairie you get a frost after April 15 so just be sure to be ready to protect your nigella if you have a late frost.

USDA Zone Info for Pleasant Prairie

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Pleasant Prairie

You may be interested in your other planting guides for Pleasant Prairie.