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  2. Rhytisma acerinum - Wikipedia

    en.wikipedia.org/wiki/Rhytisma_acerinum

    Once on the leaves, the spores germinate and penetrate through the stoma. [2] The subsequent infection causes chlorosis of the leaves in localized yellow spots. As the season continues into summer, apothecia begin to form, giving rise to brown-black leaf lesions that resemble spots of tar. [2] Leaves retain their yellow border from the initial ...

  3. Shot hole disease - Wikipedia

    en.wikipedia.org/wiki/Shot_hole_disease

    Peach tree leaves displaying various stages of the shot hole disease: brown spots on the leaf with conidium holders in the middle (center) that eventually fall off, leaving BB-sized holes behind (left) Shot hole disease of apricot leaves. The fungal pathogen Wilsonomyces carpophilus affects members of the Prunus genera. Almond, apricot ...

  4. Leaf spot - Wikipedia

    en.wikipedia.org/wiki/Leaf_spot

    The most common cause of bacterial leaf spots are by bacteria in the genera Pseudomonas and Xanthomonas. For example, Pseudomonas syringae pv. tabaci is known to cause angular leaf spots of cucumber, Pseudomonas syringae pv. phaseolicola to cause bean leaf spot and Xanthomonas campestris pv. phaseoli, angular leaf spot of cotton. [7]

  5. 7 Causes for Brown Spots on a Fiddle Leaf Fig (and How to ...

    www.aol.com/lifestyle/7-causes-brown-spots...

    5. Low Humidity. Light brown spots scattered across fiddle leaf fig leaves can be caused by dry air. If the brown spots in question have a pox-like look instead of being in a single area of the ...

  6. Follow These Easy Tips to Get Rid of Brown Patches on Your ...

    www.aol.com/easy-tips-rid-brown-patches...

    The first step to tackling those brown spots is figuring out what’s causing them. Here are some quick tips: Identify the Cause: First things first, figure out what’s causing the problem.

  7. Phyllosticta minima - Wikipedia

    en.wikipedia.org/wiki/Phyllosticta_minima

    Phyllosticta minima is a fungus of the division Ascomycota which causes purple-bordered leaf spot, a largely cosmetic disease that infects maple trees. [1] It grows on living and fallen leaves, creating tan, ovular lesions 1 ⁄ 4 inch in diameter and ringed with 'purple' or black spores.

  8. Powdery mildew - Wikipedia

    en.wikipedia.org/wiki/Powdery_mildew

    Sawadaea tulasnei is a fungus that causes powdery mildew on tree leaves. This fungus attacks the leaves of the Acer platanoides (Norway maple) in North America , Great Britain , and Ireland , Acer palmatum (also known as the Japanese maple or smooth Japanese maple).

  9. To rake, or not to rake? What to do with the leaves in your ...

    www.aol.com/weather/rake-not-rake-leaves-yard...

    As leaves break down, they return nutrients to the soil, which can help plants grow the following year. A layer of fallen maple leaves coat a deck Monday, Nov. 3, 2008 in Coeur d'Alene, Idaho. (AP ...