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.

A common way of determining when it's possible to plant aubretia is to use the USDA zone info for Fergus Falls.

Planting Calendar for Aubretia

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

Since aubretia are very cold tolerant you can plant them a lot earlier in the year than more sensitive plants.

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

Last Frost Date

In Fergus Falls the average date of last frost happens on May 15. It might get as low as -30°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Fergus Falls may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Fergus Falls there is a last frost after May 15 so make sure that you are prepared to protect your aubretia 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.