Most fungicides are not effective in treating either basal or root rot. water and store in a glass container. Root rots are caused by Fusarium fungi species and produce similar symptoms that are more centralized in the sedum’s roots. Rotting is caused from the succulent absorbing too much water. The University of California, Davis, suggests using chlorothalonil, available under several brand names, a copper spray or propiconazole. They are good “stone crops,” thriving in rock gardens and withstanding drought and poor soil. It has developed black specks all over it. This fungus rots and collapses the basal stems and turns them black or brownish. Fungicides protect new tissue but do not cure leaf spot, so it's important to follow usage directions and apply the fungicides when the first buds appear in the spring and before rainy periods. I have what I believe is an Autumn Joy Sedum plant. In addition, avoid adding fertilizer during spring rains. This site is protected by reCAPTCHA and the Google document.write(''); The severity of the disease is gauged by the number of spots and whether or not they start to join together, thereby affecting a greater portion of the leaves' surfaces. A stem like this indicates your succulent is rotting. Gene just posted this in the Succulent and Cactus Forum. garlic oil with 1 oz. Use these convenient icons to share this page on various social media platforms: Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" Water splashing the spores from one plant to another may spread the disease, but it rarely affects older, well-established plants. fish emulsion with 16 oz. Planting. To assess what causes the problem, touch the leaves. Mix 2 tbsp. fish emulsion and spray on afflicted plants to cure black spots. Avoid spongy, damp areas or sites that don't get enough sunlight. Now, in your photo, the center stem of your Graptosedum ‘California Sunset.’ is completely black and mushy. Basal rot is caused by the fungus Rhizoctonia solani. Sedum (Sedum spp.) Terms of Service apply. The best deterrent to sedum leaf spot disease is to grow the plants in areas that are well-suited to their growing needs. It is caused by the Cercospora, Colletotrichum or Septoria fungi as well as others and manifests itself with clearly defined sunken spots on the surfaces of the leaves and stems. if ($(window).width() < 1025) { Privacy Policy and Mix 3 oz. When to Plant Sedum. document.write(''); Remove and destroy infected leaves. Succulent plants are well-suited to dry, sunny areas, as they are capable of storing water indefinitely in their fat stems and leaves. Powdery spots on leaf undersides signal rust, a fungus disease. Sedum leaf spot is one of many diseases collectively called anthracnose. Both issues create serious problems for sedum if they are allowed to spread and coalesce, at which point they can overrun the plant and kill it. } Their height and attractive flowers make them good candidates for border gardens or pollinator gardens. Connecticut Agricultural Experiment Station: Sedum-Plant Health Problems, University of California Davis: Anthracnose. Please help identify these specks and how to treat them. -Mark Frost. Sedum leaf spot is one of many diseases collectively called anthracnose. The sooty mold can be treated with a fungicide. The most common one is the black spots on the leaves or even on the stems. There are three major causes of black spots: sunburn, overwatering, and insects. Neglecting to remove dead or diseased parts also threatens the health of the entire plant, as does placing an infected plant close to a healthy one. Sedum is usually bought in plugs or pots and transplanted into the garden. 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