One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Posen should be reffered to in order to determine when you can plant brunfelsia.

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 because they require warm weather.

The earliest that you can plant brunfelsia in Posen 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. You probably don't want to wait any later than that or else 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

On average all chance of frost has passed is on April 15 in Posen. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Posen is just an average the actual date of last frost is different every year. Since half of the time in Posen you get surprised by a frost after April 15 be ready to protect your brunfelsia if you have a late frost.

USDA Zone Info for Posen

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Posen

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