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

You will be able to determine when it's possible to plant brunfelsia by checking out the USDA zone info for Zone 3a.

Planting Calendar for Brunfelsia

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

It's probably a bad idea to plant brunfelsia until after the last frost has passed because they require warm weather.

The earliest that you can plant brunfelsia in Zone 3a 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 fully mature. You can get started a little bit earlier by starting your brunfelsia indoors.

Last Frost Date

The average date of last frost is May 15 in Zone 3a. In the coldest months of winter you should expect an average low temperature of -40°F.

Since the USDA zone info for Zone 3a is just an average the actual date of last frost changes from year to year. Half of the time in Zone 3a you get a frost after May 15 so just be sure to be ready to cover your brunfelsia if you have a surprise late frost.

USDA Zone Info for Zone 3a

Here is the info for USDA Zone 3a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-40°F
Highest Expected Low	-35°F

This means that on a really cold year, the coldest it will get is -40°F. On most years you should be prepared to experience lows near -35°F.

Plants to Grow in Zone 3a

You may be interested in your other planting guides for Zone 3a.