The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Big Lake it's possible to figure out when it's possible to plant browallia.

Planting Calendar for Browallia

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

Browallia are not cold tolerant which means that you have to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant browallia in Big Lake 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 browallia and expect a good harvest is probably August. Any later than that and your browallia may not have a chance to fully mature. You can get started a little bit earlier by starting your browallia indoors.

Last Frost Date

The average date of last frost is May 15 in Big Lake. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Big Lake is just an average the actual date of last frost will vary from year to year. Since half of the time in Big Lake you get surprised by a frost after May 15 be ready to protect your browallia if you have one of those late frosts.

USDA Zone Info for Big Lake

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 Big Lake

You may be interested in your other planting guides for Big Lake.