Common Cultural: Salt damage categories: Common Problems Cultural Problems revision date: 2022-10-31 10:42 Leaf tip necrosis from salt damagePhoto by: R.S. Byther Biology Plants growing adjacent to sidewalks or roads where salt is used during the winter to melt ice, can experience root injury from high salt concentrations. Overfertilization also can be responsible. Symptoms may […]
Common Cultural: Sunscald categories: Common Problems Cultural Problems revision date: 2022-10-31 10:29 Sunscald causing dead areas on apple fruitPhoto by: R.S. Byther Biology Sunscald is caused by environmental conditions. Foliage may become bleached, chlorotic or necrotic. The bark of trees can be susceptible to damage by strong sunlight. Newly planted trees or trunks and branches […]
Common Cultural: Transplant shock categories: Common Problems Cultural Problems revision date: 2022-10-31 10:21 Severe root pruning on cedarPhoto by: R.S. Byther Biology Inadequate root systems, improper planting, overwatering, underwatering, transplanting during the wrong time of year, allowing roots to dry or freeze, and severe root pruning are common reasons for transplant failures. Symptoms usually show […]
Common Cultural: Winter desiccation categories: Common Problems Cultural Problems revision date: 2022-10-31 10:18 Cedar damaged by desiccating windPhoto by: R.S. Byther Biology Plants may become desiccated (dehydrated) on sunny, cold winter days when the ground and roots are frozen. The plant is unable to take up sufficient moisture from the frozen soil to replace water […]
Common Cultural: Winter injury categories: Common Problems Cultural Problems revision date: 2022-10-31 10:10 Canker on branch from winter damagePhoto by: R.S. Byther Biology Winter injury includes a myriad of plant damage and symptoms, including death of stems and buds, frozen roots, sunscald and windscald of leaves and bark, bark splitting, leaf droop and roll, and […]
Air pollution categories: Common Problems Cultural Problems revision date: 2022-09-24 10:27 Air pollution damage on dahliaPhoto by: R.S. Byther Biology Generally, air pollution damage in the Pacific Northwest has been considered limited. Sulfur dioxide damage from large industrial emissions has been known to cause interveinal bleaching on dahlia, interveinal spotting on lilac, and needle banding […]