The salt damage is a result of our lack of rainfall over the past couple of years. Even though trees are irrigated, the treated municipal water that’s used for irrigation contains chlorides, which is not a major problem under normal circumstances.
Typically, the salt-free rain water falls often enough to dissipate and wash away the salt buildup. However, with no rainfall, the salt just accumulates, and stresses the trees.
In the case of pine trees, the problem is a several-step chain reaction: No rain means salt buildup, which stresses pine trees, which makes them a target for spider mites, which invites bark beetles, which eat the tree’s vascular system and can kill it.
Redwoods, which aren’t native to Southern California but have been planted in many locations, are also susceptible to salt damage, which makes the foliage turn brown.
If you are experiencing problems with salt-damaged trees on your property, please call Stay Green at (800) 858-5508 to schedule a visit from our Plant Health Care experts!
Defrosting Dinner? If you need to defrost food, let it sit in the refrigerator, or use your microwave, rather than running it under tap water.