When to Plant Nigella in Zone 1a

One of the first steps you take when you are determining 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.

You can figure out when it's the best time to plant nigella in Zone 1a by using 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 pretty solid cold which tells us that you can plant them quite a bit earlier in the year than plants that are more sensitive to the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant nigella
Possibly ok, but a risky time to plant nigella
Probably not a good time to plant nigella

The earliest that you can plant nigella in Zone 1a is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant nigella and expect a good harvest is probably July. If you wait any later than that and your nigella may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your nigella indoors.

Last Frost Date

In Zone 1a the average date of last frost happens on June 15. You can expect an average low temperature of -60°F in the coldest months of winter.

Remember that USDA zone info for Zone 1a is just an average and the actual date of last frost is different every year. Half of the time in Zone 1a it frosts late in the year after June 15 so make sure that you are ready to cover your nigella in the event of a late frost.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in your other planting guides for Zone 1a.