Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You will be able to determine when you can plant campanula by using the USDA zone info for Detroit Lakes.

Planting Calendar for Campanula

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

Campanula do well in moderate cold which means that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant campanula in Detroit Lakes 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 campanula and expect a good harvest is probably August. You probably don't want to wait any later than that or else your campanula may not have a chance to really do well. You can get started a few weeks earlier by starting your campanula indoors.

Last Frost Date

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

Keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Detroit Lakes and it is different every year. Since half of the time in Detroit Lakes you get surprised by a frost after May 15 be ready to protect your campanula in the event of a late frost.

USDA Zone Info for Detroit Lakes

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 Detroit Lakes

You may be interested in your other planting guides for Detroit Lakes.