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.
Christmas trees planted in unirrigated sites depend on the weather for survival. A research trial set out to find factors that would help seedlings survive during drought years. Results were mixed.
When a heatwave hits, plants may show the impact. Learn the signs of heat stress in plants and how to help them weather a heatwave with best practices for watering, mulching, shading, providing humidity and weeding.
Check out this video demonstration of the forage root cycle captured at an OSU Extension Service pasture program. Gene Pirelli, OSUES Livestock & Forages Specialist (retired) holds a clump of grass he dug up and washed the ...