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What is this and is it harmful to the plant
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What is this? #865093
Asked April 19, 2024, 10:32 AM EDT
What is this and is it harmful to the plant
Prince George's County Maryland
Expert Response
That looks like the recent remains of a rust disease. Rust diseases are unusual in that they spend part of their life cycle on junipers- most commonly our native 'Cedars' (Juniperus virginiana) and the other part of their life cycle on deciduous leaves/fruits of apple, pear, crabapple, quince etc.
That may be cedar-quince rust given that it's showing up on the wood. We do not suggest treatment as in our landscapes the damage to either host is not usually much of a problem.
Christine
That may be cedar-quince rust given that it's showing up on the wood. We do not suggest treatment as in our landscapes the damage to either host is not usually much of a problem.
Christine
Thank you for your help. It just dried up a couple days later I was just asking my master garden friend she sent it to you because she was curious herself.