Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. 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 Lone Tree should be used to determine 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.

You really shouldn't plant browallia until after the last frost because they do not do well in cold weather.

The earliest that you can plant browallia in Lone Tree 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. If you wait any later than that and your browallia may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your browallia indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Lone Tree. In the coldest months of winter you should expect an average low temperature of -15°F.

Remember that USDA zone info for Lone Tree is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Lone Tree you get surprised by a frost after April 15 so be sure to be ready to cover your browallia in the event of a surprise late frost.

USDA Zone Info for Lone Tree

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Lone Tree

You may be interested in your other planting guides for Lone Tree.