SAWS News: Last Chance to Prune Oaks
Aquifer Beaker

Edwards Aquifer

Aquifer Level 645.3'
8/20/18 - 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.

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Stage 2:
Water On Your Day

Watering with an irrigation system or sprinkler is allowed only once a week from 7-11 a.m. and 7-11 p.m. on your designated watering day as determined by your address.

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Aquifer Level 645.3 | Stage 2: Water On Your Day

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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.

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