Photinias are large shrubs that grow well in the eastern portion of the United States. In a matter of days, the spots enlarge and eventually become dark purplish circles surrounding gray, dying tissue. Photinia is very susceptible to the fungus leaf spot called Entomosporium that can defoliate photinia plants. During the spring, the photinia also has small white flowers that produce red fruits, that often last into the winter. Learn how to grow photinia in your garden with the RHS expert guide on choosing, planting, feeding, pruning and propagating plants. A care appropriate to the species is rewarded with a photinia which has a high potential of resistance. Remember, the spores don’t travel very far. ianmwiffen Posts: 3. They can also get fire blight which makes the leaves go brown but from your description I'm not thinking it's that. Photinia is a widely grown shrub commonly used for hedges. In severe cases, spots grow until the entire leaf is weakened and falls off. The Dogs Trust does not list Photinia Red Robin as being poisonous to dogs. The only problem is there are over 60 species of Photinia so we stick to growing only the more popular varieties. That's why I have mine in partial shade snuggled hiding from winds whistling down the valley and behind a copper beech hedge. The first signs of photinia leaf spot are almost unnoticeable. The best known of the photinias is Photinia × fraseri ‘Red Robin’, which is often planted as a specimen shrub or as a fast-growing, dense, evergreen hedge. Red tip photinia (Photinia fraseri) are particularly susceptible to root fungal diseases in poorly drained soil. Unfortunately, with the overuse and close planting of red tipped photinia, disease wasn’t far behind and resulted in constant, yearly attacks by photinia fungus also known as photinia leaf spot. If trimmed twice a year (spring and summer) Photinia can be kept as a … Photinia (Red Robin) Kay is usually grown for its beautiful red leaves and these appear on newly formed shoots and regular pruning will encourage … Many thanks. Like most plant fungi, this one thrives in the cool, moist environment of the fall and spring and attacks the most vulnerable new growth that gives the shrub its name, red tipped photinia, and the disease spreads from there. To grow a magnificent ‘Red Robin’ Photinia Adding all-purpose fertilizer in spring will boost growth and make the leafage magnificent. Anything that's contained in a pot is going to be susceptible to that. Nevertheless, a photinia is not completely immune to diseases. Great many thanks for your help. Tiny, round red spots appear on leaf surfaces and because the leaf color of the new growth they attack, the darker red spots are easy to ignore. It is mainly fungal infections which lead to health problems. They prefer sun or partial shade. Photinia fraseri, Christmas Berry Hedge Photinia Red Robin is a very popular garden plant that makes a fantastic hedge. Red tip photinia breeding led to this fatal flaw: weak roots that are highly susceptible to root fungal diseases. Chlorothalonil, propiconazole, and myclobutanil are the effective ingredients to look for in available fungicides. Here is the difference between varieties to make it easier when plant shopping online. During the rainy weather of spring, the spores continue to spread through water splashing from one leaf to the next until the entire shrub is infected. But you need to be aware, especially if you have young children, that the leaves and fruits of some Photinia species may contain carcinogenic compounds. Symptoms of Photinia Entomosporium leaf spot It starts off by creating spots of light swelling on leaves and then the color changes to brown and dark red, and ultimately to black or gray. 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