One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's a good idea to determine when you can plant centaurea by looking at the USDA zone info for Bemidji.

Planting Calendar for Centaurea

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

Centaurea are one of those plants that can tolerate a little bit of cold weather which means that you can plant them a little bit earlier than plants that are more sensitive to the cold.

The earliest that you can plant centaurea in Bemidji 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 centaurea and expect a good harvest is probably August. Any later than that and your centaurea may not have a chance to really do well. You can get started a little bit earlier by starting your centaurea indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Bemidji. In the coldest months of winter you can expect an average low temperature of -35°F.

It's important to remember that USDA zone info for Bemidji is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Bemidji you get surprised by a frost after May 15 be ready to protect your centaurea in the event of one of those late frosts.

USDA Zone Info for Bemidji

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 Bemidji

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