Slime Flux

The main symptom of slime flux (often called wet wood) is the oozing of sour-smelling sap from the tree's trunk, cracks and branch crotches. The sap is more prevalent during the spring and early summer when the tree is growing more rapidly. The sap drips down the bark and causes a gray-white streaking on the trunk and branches. The tree may also show signs of wilting and leaf scorch. Often insects will be attracted to the sap, but they are the symptoms, not the cause of the slim flux.

Slime Flux can be caused by several different bacterial infections in the tree's vascular system. Basically it is caused by increased pressure on the tree's vascular system due to higher levels of bacterial fermentation in the tree's heartwood. This pressure leads to discharge oozing through cracks and openings in the tree's bark.

There is no specific treatment for slime flux, but it is important to properly fertilize and water the tree, as it is under stress from the infection. Often, the problem diminishes after a few years as the tree’s vascular system strengthens. Maintaining overall tree health is critical to prevent susceptibility to other diseases or insect attacks.

Recommended Steps to Support Trees with Slime Flux:

  • Fertilization: Apply the TreeHelp Annual Care Kit, which contains appropriate fertilizer, mycorrhizal fungi, and biostimulants to promote root development and long-term vitality.

  • Watering: Provide deep root watering at least twice a week, and more frequently during periods of extreme drought. Water should penetrate 24–36 inches into the soil to fully hydrate the root zone.

  • Drought Support: During severe drought, consider using Hydretain Root Zone Moisture Manager to help retain water near the root zone and keep it hydrated during stress periods.