The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant aubrieta in Hibbing should be estimated by using the USDA zone info.

Planting Calendar for Aubrieta

Frost tolerance for aubrieta:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since aubrieta do well in moderate cold you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant aubrieta in Hibbing 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 aubrieta and expect a good harvest is probably August. If you wait any later than that and your aubrieta may not have a chance to really do well. Starting your aubrieta indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Hibbing. In the coldest months of winter you should expect an average low temperature of -35°F.

Always keep in mind that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Hibbing and it can change quite a bit from year to year. Since half of the time in Hibbing you get surprised by a frost after May 15 be ready to cover your aubrieta if you have one of those late frosts.

USDA Zone Info for Hibbing

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Hibbing

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