SAWS News: Last Chance to Prune Oaks
Aquifer Beaker

Edwards Aquifer

Aquifer Level 684.4'
5/16/19 - Official

The Edwards aquifer and its catchment area in the San Antonio region is about 8,000 square miles and includes all or part of 13 counties in south-central Texas.

Learn More »


Year-Round Watering Hours

Watering with an irrigation system or sprinkler is allowed any day of the week before 11 a.m. or after 7 p.m.

Learn More »


Aquifer Level 684.4 | Year-Round Watering Hours

Log In

Pay Your Bill Online

Already registered? Log in now.

Forgot your password?

New User

My Account Page

No user account? No problem.

Sign Up Now


Last Chance to Prune Oaks

Chop-chop. If you want to minimize the chance of oak wilt, you'll want to prune your oak trees double-quick.

The beetles that carry the spores of oak wilt fungus are very few or unlikely to fly during the coldest days of the year — which will soon be behind us.

Some helpful dos and don’ts:

  • Prune narrow branch junctions that are V-shaped; these are structurally weak, especially if two or more of the branches are of equal diameters.
  • Look for the “3-D” branches — dead, diseased and dying. These are a source of disease and insects.
  • Never cut through the branch collar — the donut-shaped ring at the junction of two branches. This is a zone of specialized cells and chemicals that reduces the potential for decay and disease.

Most importantly, always paint fresh oak wounds — this is essential to preventing oak wilt.

Painting the wounds is not necessary if the tree is an elm, ash, sycamore, pine, tallow or pecan tree.

Back to SAWS News Next: Early Morning Storms Trigger Sewer Overflow