Noticed this thick, amber-colored jelly oozing out of the trunk of my cherry tree. It feels squishy and looks like some kind of alien sap or slime. Does anybody know what this thing is?

2. How Gummosis Forms: The Tree’s Stress Response Explained
Gummosis forms as a result of the tree’s natural defense mechanisms. When a tree experiences stress—be it from physical damage, disease, or environmental factors—it produces excess sap as a way to seal wounds and prevent further damage.
This process begins with the tree cells producing more sap in response to an injury or infection. The sap then travels to the site of the damage, where it oozes out and eventually hardens upon exposure to air, forming the characteristic gummy appearance. It’s a bit like a scab forming on a wound in humans, providing a protective barrier against further harm.

3. Common Causes: From Mechanical Damage to Environmental Stress
Several factors can lead to gummosis in cherry trees. Mechanical damage, such as from improper pruning or physical injury from garden tools, can trigger the tree’s defense response.

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