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.

In Jasper you can figure out when it's possible to plant nigella by referring to the USDA zone info.

Planting Calendar for Nigella

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

Nigella are very cold tolerant which tells us that you can start planting them much earlier than more sensitive plants.

The earliest that you can plant nigella in Jasper 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. If you wait any later than that and your nigella may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your nigella indoors.

Last Frost Date

The average date of last frost is April 15 in Jasper. It might get as low as 5°F during the coldest months of winter.

Since the USDA zone info for Jasper is an average the actual date of last frost will vary from year to year. Since half of the time in Jasper last frost occurs after April 15 be ready to cover your nigella if you have one of those late frosts.

USDA Zone Info for Jasper

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Jasper

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