One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Sidney you can figure out when it's possible to plant nigella by checking out 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 do ok in cold weather which means that you can plant them quite a bit earlier in the year than more sensitive plants.

The earliest that you can plant nigella in Sidney 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. You can get started a little bit earlier by starting your nigella indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Sidney. You should expect an average low temperature of -10°F in the coldest months of winter.

It's important to remember that USDA zone info for Sidney is an average and the actual date of last frost changes from year to year. Half of the time in Sidney you get surprised by a frost after April 15 so make sure that you are prepared to cover your nigella in the event of a surprise late frost.

USDA Zone Info for Sidney

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Sidney

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