The Lady Slipper newsletter, and now blog, of the Kentucky Native Plant Society has been published since the Society’s founding in 1986. We occasionally feature an article from a past issue. In this article from 2011, Tara Littlefield discusses the rare Kentucky shrub, sweet fern (Comptonia peregrina) . This article ran in Vol. 26, No. 1. If you would like to see these and other past issues, visit the Lady Slipper Archives, where all issues from Vol. 1, February 1986 to Vol. 40, 2025, can be found.

Sweet fern—A rare Kentucky shrub with an interesting history

By Tara Littlefield, Office of Kentucky Nature Preserves

The wax myrtle or bayberry family (Myricaceae) is known for its odor. These plants have resinous dots on their leaves, making their leaves aromatic. Plants in this family have a wide distribution, including Africa, Asia, Europe, North America and South America, missing only from Australasia. Myricaceae members are mostly shrubs to small trees and often grow in xeric or swampy acidic soils. More familiar members of the wax myrtle family include many in the Genus Myrica (sweet gale, wax myrtle), some of which are used as ornamentals and are economically important. In addition, the wax coating on the fruit of several species of Myrica, has been used traditionally to make candles.

So what does this interesting family have in common with Kentucky’s flora? We are lucky to have just one species in the wax myrtle family, Sweet fern (Comptonia peregrina). In addition, it is also a monotypic genus restricted to eastern North America. This means that the genus Comptonia has only one species (C. peregrina) worldwide, and just happens to be found here in KY! Of course the common name sweet fern is misleading. This woody shrub is certainly not a fern. However, the leaves have a similar shape to pinnules of a fern frond (leaf). But having sweet in the common name is no mistake. If you crush the leaves throughout the growing season, a lovely smell is emitted as the essential oils volatilize into the air.

The Lady Slipper newsletter, and now blog, of the Kentucky Native Plant Society has been published since the Society’s founding in 1986. We occasionally feature an article from a past issue. In this article from 2007, Maggie Whitson discusses the botany of the American persimmon (Diospyros virginiana). This article ran in Vol. 22, No. 1. If you would like to see these and other past issues, visit the Lady Slipper Archives, where all issues from Vol. 1, February 1986 to Vol. 40, 2025, can be found.

The Pleasing Persimmon

by Maggie Whitson

With large orange fruit dangling from bare branches like Halloween ornaments, the American persimmon (Diospyros virginiana L.) puts on a striking late fall display along our fields and roadsides. The numerous sweet fruits were notable enough to find their way into the genus name, which means “fruit (-pyros) of the gods (dios).”

Persimmons are common in Kentucky and occur throughout the state. The species is found as far south as Florida and ranges up the Gulf Coast to Connecticut. It laps from the Southeast on to the Midwest and peters out around eastern Texas. Like many widespread plants, persimmons have a variety of common names, ranging from picturesque to puzzling. To list a few: dateplum, seeded-plum, winter-plum, simmon, lotus-tree, Jove’s fruit, and possum-wood.

Though the typical persimmon has a trunk ranging from about 6″ to 24″ in diameter, given optimum growing conditions and plenty of time, they can get much larger. Kentucky’s champion persimmon is located in Ballard County, and is 113.5 inches around, or about 36″ wide. The U.S. champion tree is in Portsmouth, Ohio, and is a whopping 142″ in circumference and 82 feet high.