Have you ever noticed the vibrant colors and smooth textures emerging from beneath the peeling bark of crape myrtles? This summer spectacle is familiar in Louisiana gardens, so much that many people think it’s a crape myrtle exclusion trait. However, a wide variety of trees in our region shed their bark, each with its unique timing and visual appeal.
Let’s take a closer look at the world of exfoliating trees, exploring the science behind the shed, identifying other bark-shedding beauties in Louisiana, and discovering why this phenomenon is a sign of healthy, thriving trees.
The Science of Exfoliation: Why Trees Shed Their Bark
Just like a snake shedding its skin, trees shed their bark as a natural part of growth and renewal. As trees expand in girth, the outer bark layers can’t always keep up. This leads to splitting and peeling, revealing a fresh layer of bark underneath. This new bark is often smoother, more vibrant, and can even be a different color, adding a splash of visual interest to the landscape.
Other Exfoliating Trees in Louisiana
While crape myrtles are perhaps the most well-known exfoliators, several other trees in Louisiana also participate in this captivating process.
- River Birch (Betula nigra): In late spring or early summer, river birch trees begin shedding their papery bark, revealing a palette of colors from creamy white and salmon pink to cinnamon brown.
- Sycamore (Platanus occidentalis): As summer transitions to fall, sycamore trees reveal their mottled bark patterns in shades of green, tan, and gray. The exfoliation process enhances these patterns, creating a visually striking display.
- Others to Watch For: Keep an eye out for exfoliation in other trees like drake elms & maples. Though some pine & oak species do shed, those varieties aren’t as prevalent – if at all – in Louisiana.
River Birch
Sycamore
Drake Elm
Should I be Worried About Bark Peeling?
In most cases, bark peeling is a sign of a healthy, growing tree. It’s a natural process that helps trees remove pests, diseases, and old, damaged bark. However, excessive peeling, especially on young trees or when accompanied by other signs of stress (like wilting leaves or branch dieback), could indicate an underlying problem. If you’re concerned about your trees, it’s always best to consult with a certified arborist.
Celebrating the Beauty of Exfoliation
Exfoliation is not just a biological process; it’s beautiful too! The color of new, exposed bark is a trait gardeners keep asking about, mostly with crape myrtles but other trees as well. This has pushed plant breeders to keep finding unique colors, better peeling habits, and better marketing of the process. Call me when the zebra birch tree drops, I’m all here for it!
