![]() Botrytis spores fly easily on the air and the disease also spreads readily on your hands, pruning equipment, containers, tools, etc. Botrytis lesions eventually develop a gray fuzzy appearance as it spreads its spores. This pathogen is very common and affects a broad number of plants. However, I feel that the most likely culprit here is a fungal disease called botrytis. Anthracnose could be to blame for the spots on your jade leaves. This pathogen affects dozens of different plant species and appears differently on different plants, though typically it’s dark, round lesions on the foliage. On a jade plant in particular, it will cause small pock marks on the leaves that can develop into larger lesions that look a bit like what’s happening to the leaves of your plant that are drying up and dying.Īnthracnose is another possibility. On succulents, however, powdery mildew looks very different. ![]() Powdery mildew, which is a common garden fungal pathogen, typically covers the leaves in what looks like white talcum powder. Without sending a leaf sample in to a pathology lab, it’s difficult to say with 100% confidence which one of these diseases is to blame, but regardless of which fungus is plaguing your jade, the treatment is the same. Unfortunately there are several fungal pathogens that can affect jade. The issue with your jade is most likely a fungal problem. I don’t think this is the issue with your jade plant either because the black spots of this virus typically appear on the undersides of the leaves, not the upper leaf surfaces as shown in your photo. Spread by feeding insects, this virus (like most other plant viruses) is not deadly it just makes the plant look not-so-hot. It also does not cause the leaf edges to dry up and die.Ī virus called black ring virus also occasionally strikes jade plants. Typically, however, sooty mold appears in larger patches than what I see on your plant. The presence of sooty mold makes the leaves look like they’re covered in black soot. But, their excrement (called “honeydew”) can encourage the growth of black sooty mold. While I don’t think this is the case with your particular plant, leaf-sucking insects, mealy bugs in particular, can cause stunted growth. ![]() These succulents are native to the African continent and have been a popular houseplant for many decades.īlack splotches on the leaves of jade plants could be due to several different factors. I would like to save them and would appreciate any advice you can provide.Īnswer: While jade plants ( Crassula ovata) are considered to be fairly trouble-free, issues can crop up from time to time. I’ve been spraying with a biofungicide and also putting baking soda dissolved in water on some of the spots with cotton swabs. I’ve never encountered anything like this and feel it must be some kind of weird virus. Q uestion: Several of my jade plants have developed black spots as well as places on the edge or middle of the leaf that totally dry up. ![]()
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