The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant fanflower in Viroqua should be determined by using the USDA zone info.

Planting Calendar for Fanflower

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

You really shouldn't plant fanflower until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant fanflower in Viroqua 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. Any later than that and your fanflower may not have a chance to fully mature. Starting your fanflower indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Since the USDA zone info for Viroqua is not always accurate the actual date of last frost is different every year. Half of the time in Viroqua last frost occurs after May 15 so just be sure to be ready to cover your fanflower if you have a late frost.

USDA Zone Info for Viroqua

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 Viroqua

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