Some plants absorb excess nitrates or oxalates from the soil and store them in plant tissues. Toxicity problems can occur in animals which feed on these plants.
Excessive summer irrigation of oak and madrone trees may promote fungal diseases such as the oak root fungus (aka armillaria root disease) and crown rot.
Browning or dieback is usually caused by weather-related stress, sometimes in combination with pests and diseases.
This article briefly discusses the most prevalent madrone disease problems, then offers a broader perspective on the health of this southern Oregon native.
There are probably few plants that are more strongly identified with this area or are held in greater affection than the madrone tree.
Almost two-thirds of Oregon’s agricultural land will be changing hands in the next two decades, but the vast majority of Oregon farmers and ranchers have not formalized plans to pass their land and businesses to the next ...
The United States is fortunate to have 50 state “laboratories” with unique programs and policies to sample from. Yet state practitioners seldom have the chance to learn deeply about their peers’ hard-won lessons in order to...