One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Allen Park you can estimate when to plant campanula by reviewing 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.

Campanula do well in moderate cold which means that you can get them planted earlier than other plants that might not handle the cold.

The earliest that you can plant campanula in Allen Park 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 fully mature. You can get started a little bit earlier by starting your campanula indoors.

Last Frost Date

The average date of last frost is April 15 in Allen Park. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Allen Park may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Allen Park last frost occurs after April 15 so be sure to be ready to protect your campanula if you have one of those late frosts.

USDA Zone Info for Allen Park

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Allen Park

You may be interested in your other planting guides for Allen Park.