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.

The earliest that you can plant campanula in Shakopee can be estimated by referring to the USDA zone info.

Planting Calendar for Campanula

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

You can plant campanula a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant campanula in Shakopee 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. Any later than that and your campanula may not have a chance to fully mature. If you are starting your campanula indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on May 15 in Shakopee. In the coldest months of winter you should expect an average low temperature of -25°F.

Keep in mind that USDA zone info for Shakopee may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Shakopee there is a last frost after May 15 so make sure that you are ready to protect your campanula in the event of a late frost.

USDA Zone Info for Shakopee

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Shakopee

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