Before planting it is a good idea to find your USDA Zone info to estimate 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.

A common way of estimating when to plant coral bells is to consult the USDA zone info for Bremen.

Planting Calendar for Coral Bells

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

Coral Bells can survive in mild cold which tells us that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant coral bells in Bremen 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 coral bells and expect a good harvest is probably September. If you wait any later than that and your coral bells may not have a chance to fully mature. Starting your coral bells indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Bremen. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Bremen is not always accurate the actual date of last frost changes from year to year. Since half of the time in Bremen there is a last frost after April 15 be ready to protect your coral bells in the event of one of those late frosts.

USDA Zone Info for Bremen

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Bremen

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