Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to determine when you can plant leeks by using the USDA zone info for Donora.

Planting Calendar for Leeks

Frost tolerance for leeks:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Leeks do well in cold which tells us that you can plant them a quite a bit earlier than more sensitive plants.

The earliest that you can plant leeks 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 leeks and expect a good harvest is probably September. Any later than that and your leeks may not have a chance to fully mature. You can get started a few weeks earlier by starting your leeks indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Donora. You should expect an average low temperature of -5°F in the coldest months of winter.

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. Half of the time in Donora you get surprised by a frost after April 15 so be sure to be ready to cover your leeks 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.