Use drought tolerant plants with oaks. They are more compatible than lawn. If the tree is diagnosed with sudden oak death, cut it down and pile the wood in place. To prevent the fungus or the beetles from spreading, cover stump and wood with plastic for at least six months, tucking in edges and securing with rocks Note that fungicides such as Astro may be applied to slow beetle activity, but no fungicide has yet been recommended to treat sudden oak death syndrome. Phytophthora spores can swim in water, and it is possible that they might also travel by soil, wind, beetles.
Researchers are still uncertain how the disease spreads.
Do not transfer firewood from affected counties. Check with the local Cooperative Extension Service for advice on treatment or disposal of dead branches or trees. Quarantines are being considered.