I checked out Shakerag Hollow on the Domain at the University of the South this weekend, looking for wildflowers to photograph. There were a few out, but I'm thinking they've already peaked this year because of the early Spring. Typically, around the middle of April is the best time. If you're not familiar with the section of Sewanee's Perimeter Trail that runs through Shakerag Hollow, it's known as one of the best places in the South Cumberland region to see a virtual cornucopia of spring wildflowers.
According to the Sewanee Herbarium's website, a trail guide is available which focuses on the plants of Shakerag Hollow, but also covers its geology, wildlife, and other aspects. For information about the guide and how to obtain one, click here.
John Benson has created a guide to Sewanee's best hikes which includes a description of the Shakerag Hollow trail and a map of the entire Sewanee trail system. Look for Shakerag Hollow in the upper right corner of the map. View guide.
Click here to watch a 10 min. video of Mack Pritchard, Tennessee's state naturalist emeritus, as he leads a hike in Shakerag Hollow in 2009 and talks about the geology and plant communities of the area.