One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. 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 gayfeather in Pittsburgh should be figured out by reviewing the USDA zone info.

Planting Calendar for Gayfeather

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

Gayfeather do well in cold which tells us that you can get them planted much earlier than other plants that might not handle the cold.

The earliest that you can plant gayfeather in Pittsburgh 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 gayfeather and expect a good harvest is probably September. Any later than that and your gayfeather may not have a chance to really do well. If you are starting your gayfeather indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

Keep in mind that USDA zone info for Pittsburgh may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Pittsburgh you get a frost after April 15 so be sure to be ready to protect your gayfeather if you have a late frost.

USDA Zone Info for Pittsburgh

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 Pittsburgh

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