Clean the wound area, then apply Treekote asphalt emulsion wound dressing directly over any pruning cut or damage larger than ½ inch — this seals exposed wood against moisture loss, decay fungi, and bark beetles before they can establish.

The critical variable is timing. Treekote wound dressing needs to go on within 3 days of the cut; for oaks, treat the same day if possible because sap-feeding beetles that spread oak wilt are drawn to fresh wounds almost immediately during spring and early summer. Apply the aerosol from 8–10 inches away for even coverage, or use the brush-top container for larger wounds and cavity work where controlled application matters more than speed.

  • Application window: treat wounds larger than ½ inch within 3 days — same day for oaks during beetle flight season.
  • Aerosol spray distance: 8–10 inches from the wound surface for even Treekote coverage.
  • Treekote wound dressing formats: aerosol (8 oz, 12 oz), brush-top container (16 oz), tub (16 oz), gallon bucket.
  • 1983 ISA study: Treekote-treated wounds showed higher closure rates and lower decay incidence than untreated controls.

Step-by-Step

  1. Assess the wound size and species: Confirm the damaged area exceeds ½ inch — smaller cuts don't require treatment. For oaks during spring or early summer, treat the same day regardless of size.
  2. Remove loose or ragged bark: Use a clean, sharp knife to trim any torn bark edges back to firmly attached tissue. Do not carve the wound into an oval shape — that practice is outdated and removes healthy cambium.
  3. Brush away debris and sawdust: Wipe the exposed wood surface clean with a dry cloth so Treekote wound dressing bonds directly to the wood, not to dust or loose material.
  4. Apply Treekote wound dressing in a single even coat: For the aerosol, hold the nozzle 8–10 inches from the surface and sweep across the wound in one pass. For the brush-top container, work from the wound edges inward, covering all exposed wood and a thin margin of surrounding bark.
  5. Confirm full coverage with no bare spots: The sealed surface should appear uniformly dark. Any missed area — especially at wound edges where bark meets exposed wood — is an entry point for beetles and moisture.
  6. Leave the dressing undisturbed: Do not bandage or wrap over Treekote wound dressing. The asphalt emulsion needs airflow to cure and must remain exposed to function as a barrier through the wound-closure period.