One of the first steps you take when you are estimating 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.

In Sun Prairie you can figure out when it's possible to plant brunfelsia by referring to the USDA zone info.

Planting Calendar for Brunfelsia

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

Since brunfelsia require warm weather you must wait until after the last frost has passed before you can plant them.

The earliest that you can plant brunfelsia in Sun Prairie is April. However, you really should wait until May 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 fully mature. Starting your brunfelsia 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 Sun Prairie. In the coldest months of winter you can expect an average low temperature of -20°F.

Just be sure to remember that USDA zone info for Sun Prairie may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Sun Prairie it frosts late in the year after April 15 so be sure to be ready to cover your brunfelsia in the event of a late frost.

USDA Zone Info for Sun Prairie

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Sun Prairie

You may be interested in your other planting guides for Sun Prairie.