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 way of estimating when it's possible to plant brunfelsia is to consult the USDA zone info for Viroqua.

Planting Calendar for Brunfelsia

Frost tolerance for brunfelsia:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You should not plant brunfelsia until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant brunfelsia 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 brunfelsia and expect a good harvest is probably August. Any later than that and your brunfelsia may not have a chance to really do well. Starting your brunfelsia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on May 15 in Viroqua. It might get as low as -25°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Viroqua and it is different every year. Half of the time in Viroqua last frost occurs after May 15 so make sure that you are ready to protect your brunfelsia 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.