One of the first steps you take when you are getting a good idea your gardening schedule is find your 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.

It's possible to determine when it's possible to plant fanflower by referring to the USDA zone info for Berlin.

Planting Calendar for Fanflower

Frost tolerance for fanflower:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You can not plant fanflower until after the last frost has passed because they require warm weather.

The earliest that you can plant fanflower in Berlin is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant fanflower and expect a good harvest is probably August. If you wait any later than that and your fanflower may not have a chance to fully mature. You can get started a little bit earlier by starting your fanflower indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Berlin. In the coldest months of winter you can expect an average low temperature of -25°F.

Keep in mind that USDA zone info for Berlin is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Berlin there is a last frost after May 15 so make sure that you are prepared to cover your fanflower if you have a late frost.

USDA Zone Info for Berlin

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 Berlin

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