One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Loudon you should be able to estimate when you can plant browallia.

Planting Calendar for Browallia

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

It's not a good idea to plant browallia until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant browallia in Loudon 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 fully mature. Starting your browallia indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Loudon. In the coldest months of winter you should expect an average low temperature of 0°F.

Just be sure to remember that the actual date of last frost is an average because it is based on the USDA zone info for Loudon and it will vary from year to year. Since half of the time in Loudon you get surprised by a frost after April 15 be ready to cover your browallia if you have a late frost.

USDA Zone Info for Loudon

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Loudon

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