Before planting it is a good idea to find your USDA Zone info to estimate 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 Dallas you can determine when you can plant nigella by looking at 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 can survive in a bit of cold which tells us that you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant nigella in Dallas 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. Any later than that and your nigella may not have a chance to grow to maturity. You can get started a little bit earlier by starting your nigella indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Dallas is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Dallas you get surprised by a frost after April 15 be ready to protect your nigella if you have one of those late frosts.

USDA Zone Info for Dallas

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 Dallas

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