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

In Grand Rapids you can determine when it's a good idea to plant browallia by using the USDA zone info.

Planting Calendar for Browallia

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

Since browallia require warm weather you need to wait until after the last frost before you can plant them.

The earliest that you can plant browallia in Grand Rapids 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 browallia and expect a good harvest is probably August. Any later than that and your browallia may not have a chance to really do well. You can get started a few weeks earlier by starting your browallia indoors.

Last Frost Date

The average date of last frost is April 15 in Grand Rapids. In the coldest months of winter you should expect an average low temperature of -10°F.

Always keep in mind that USDA zone info for Grand Rapids may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Grand Rapids last frost occurs after April 15 be ready to cover your browallia if you have a surprise late frost.

USDA Zone Info for Grand Rapids

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 Grand Rapids

You may be interested in your other planting guides for Grand Rapids.