Check out yellow leaves on rhododendrons and azaleas.
This article describes how to determine vineyard nutrient needs through tissue and soil sampling.
While the type of soil is important, location takes precedence when starting a vineyard for wine production.
A list of recommended trees and shrubs in Oregon, good for controlling erosion.
Information on vineyard water management, focusing on when to initiate irrigation.
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.