Phytophthora Root Rot Disease

Phytophthora root rot is a disease of many trees and shrubs. The disease derives its name from the Greek language and literally means “plant destroyer.” As such, this is a fitting name for the pathogen, which can kill its host by growing through the roots upward. Phytophthora root rot thrives in wet and poorly drained soil conditions and attacks a wide range of species. Evidence of phytophthora root rot on yews. Most Susceptible Tree and Shrubs Species azaleaboxwoodconifersdaphnedogwoodhollyjunipertaxusrhododendron A soil-borne microorganism, Phytophthora species are more closely related to brown algae…

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Citrus Trees: A Favorite Since Ancient Times

People have grown citrus trees since ancient times and helped spread these fruit-bearing favorites around the world! Citrus are native to Southeast Asia. However, humans brought them to increasingly distant places over time. Moving along trade routes, various species arrived in the Middle East and Mediterranean, then on to Europe. Spanish conquistadors first introduced citrus to North America in Florida. Now, citrus are some of the most common landscape fruit trees in California, Arizona and Texas. Growing citrus trees at home Citrus trees thrive in sunny, humid environments with fertile…

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