One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when it's possible to plant aurinia is to look at the USDA zone info for Devils Lake.

Planting Calendar for Aurinia

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

Since aurinia are very cold tolerant you can plant them much earlier in the year than other plants that might not handle the cold.

The earliest that you can plant aurinia in Devils Lake 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. If you wait any later than that and your aurinia may not have a chance to grow to maturity. Starting your aurinia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on May 15 in Devils Lake. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Devils Lake may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Devils Lake you get a frost after May 15 so make sure that you are prepared to cover your aurinia if you have a surprise late frost.

USDA Zone Info for Devils Lake

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 Devils Lake

You may be interested in your other planting guides for Devils Lake.