Avocado Tree Grafted Free Shipping. Cold tolerant when mature. 'Super Haas', 'Fantastic', 'Wurtz Little Cado', 'Winter Mexican', 'Brogdon', 'Mexicola' A Natural Farm National Capital PRISM and Invasive Species (U.S. National Park Service) Propagating Arrowhead Plant Plant Addicts Leaf diseases, often fungal or bacterial, manifest as spots, powdery coatings, rusts, or blights, causing yellowing, spots, and wilting, with common examples including Powdery Mildew, Leaf Spot, Rust, Anthracnose, and Viruses like