The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Fergus Falls you can estimate when you can plant aurinia by looking at the USDA zone info.

Planting Calendar for Aurinia

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

Aurinia can survive in quite a bit of cold which tells us that you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant aurinia in Fergus Falls is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant aurinia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your aurinia may not have a chance to really do well. You can get started a couple of weeks earlier by starting your aurinia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Fergus Falls. You should expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Fergus Falls is not always accurate the actual date of last frost will vary from year to year. Half of the time in Fergus Falls you get a frost after May 15 so be sure to be ready to cover your aurinia if you have one of those late frosts.

USDA Zone Info for Fergus Falls

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Fergus Falls

You may be interested in your other planting guides for Fergus Falls.