Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Whitefish you can determine when it's possible to plant campanula by using 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.

Since campanula do well in moderate cold you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant campanula in Whitefish is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant campanula and expect a good harvest is probably September. Any later than that and your campanula may not have a chance to grow to maturity. Starting your campanula indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Whitefish. In the coldest months of winter you should expect an average low temperature of -20°F.

Keep in mind that USDA zone info for Whitefish may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Whitefish it frosts late in the year after April 15 be ready to cover your campanula in the event of a late frost.

USDA Zone Info for Whitefish

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Whitefish

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