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Crataegus #582479

Asked July 22, 2019, 2:21 PM EDT

Please see the attached photos of Hawthorn trees in Annapolis. This appears to be rust but I'm not sure which one and if that will affect the treatment. It was my impression this would be a winter pruning and possible spray next spring when they start to bud. Or this that for Blight?

Anne Arundel County Maryland

Expert Response

This does look like rust, possibly cedar/quince (on hawthorn) but it doesn't really matter.  
These issues generally don't do enough harm to warrant treatment.

Here is our page on rust diseases: https://extension.umd.edu/hgic/topics/rust-diseases-trees


Christine
Answered by the Home & Garden Information Center's Maryland Certified Professional Horticulturists Replied July 23, 2019, 11:15 AM EDT

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