Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant brunfelsia in River Falls can be determined by looking at the USDA zone info.

Planting Calendar for Brunfelsia

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

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 River Falls 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 grow to maturity. You can get started a little bit earlier by starting your brunfelsia indoors.

Last Frost Date

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

Since the USDA zone info for River Falls is just an average the actual date of last frost will vary from year to year. Since half of the time in River Falls it frosts late in the year after May 15 be ready to protect your brunfelsia if you have a surprise late frost.

USDA Zone Info for River Falls

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 River Falls

You may be interested in your other planting guides for River Falls.