One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of getting a good idea when it's the best time to plant browallia is to look at the USDA zone info for Olyphant.

Planting Calendar for Browallia

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

Since browallia are not cold tolerant you really should wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant browallia in Olyphant 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. You probably don't want to wait any later than that or else your browallia may not have a chance to really do well. You can get started a couple of weeks earlier by starting your browallia indoors.

Last Frost Date

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

Since the USDA zone info for Olyphant is an average the actual date of last frost will vary from year to year. Since half of the time in Olyphant it frosts late in the year after April 15 be ready to cover your browallia if you have a late frost.

USDA Zone Info for Olyphant

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 Olyphant

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