The ability of redwoods to heal themselves is almost as remarkable as how incredibly tall they grow. Amazingly, coast redwoods can heal over a wound when they are injured from fire, are damaged by the wind, or even are cut down by the ax.
A living tissue layer underneath the bark is responsibly for growing new bark over tree wounds. This tissue is called the cambium and it slowly spreads over exposed wood as cambial cells divide and transform into new bark that keeps water in the tree and keeps disease and pests out. Other parts of the tree send sugar to feed the cambium as it grows over the injury and this healing can take many years if it is a big wound.
It’s mind-blowing to see this healing happen on large stumps of trees that seem like they should be dead. Even if when redwoods are cut down, we find evidence that their roots and clonal sprouts live on, able to provide enough energy to the stump for it to start healing itself.
Have you seen this in the forest? Tell me about it!
One Response to “How Redwoods Heal”
Terra Barsanti
Emily,
I would love your opinion on the redwoods on my property that burned VERY hot in the CZU fire of 2020 in Last Chance. They are growing greenery but the foresters are advising my neighbors to clear cut. Big Creek Lumber has already cut most of the Rancho del Oso trees below me. I’m skeptical that the trees are basically “a dead
forest”. Thank you for your time. Terra