When can I plant Browallia in Zone 1b

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

The USDA zone info for Zone 1b can be read to estimate when it's possible to plant browallia.


Planting Calendar for Browallia

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

Browallia do not do well in cold weather which tells us that you must wait until it warms up after all chance of frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant browallia
Possibly ok, but a risky time to plant browallia
Probably not a good time to plant browallia

The earliest that you can plant browallia in Zone 1b is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant browallia and expect a good harvest is probably July. Any later than that and your browallia may not have a chance to grow to maturity. Starting your browallia indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is June 15 in Zone 1b. In the coldest months of winter we can expect an average low temperature of -55°F.

Since the USDA zone info for Zone 1b is not always accurate our actual date of last frost is different every year. Half of the time in Zone 1b it frosts late in the year after June 15 so be sure to be ready to protect your browallia if we have a surprise late frost.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.