The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Signal Mountain you can estimate when to plant gayfeather by using 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 tend to make it in a bit of cold which tells us that you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant gayfeather in Signal Mountain 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 fully mature. You can get started a little bit earlier by starting your gayfeather indoors.

Last Frost Date

On average the last frost is on April 15 in Signal Mountain. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Signal Mountain is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Signal Mountain you get surprised by a frost after April 15 so always be ready to cover your gayfeather in the event of a surprise late frost.

USDA Zone Info for Signal Mountain

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 Signal Mountain

You may be interested in your other planting guides for Signal Mountain.