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

The first chance to plant violets in Donora should be estimated by looking at the USDA zone info.

Planting Calendar for Violets

Frost tolerance for violets:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Violets can survive in a little bit of cold which tells us that you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant violets in Donora is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant violets and expect a good harvest is probably September. If you wait any later than that and your violets may not have a chance to really do well. You can get started a couple of weeks earlier by starting your violets indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Donora. In the coldest months of winter you should expect an average low temperature of -5°F.

Since the USDA zone info for Donora may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Donora it frosts late in the year after April 15 be ready to cover your violets if you have a surprise late frost.

USDA Zone Info for Donora

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Donora

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