Garden Pests and Diseases: Hawthorn rust?, 1 by valrita

valrita wrote:
My husband planted this Hawthorn---I think it is a Washington Hawthorn (he isn't sure). There are areas that swell up and look horrible. Maybe it's some type of apple cedar rust?

What do we do about it? Can we get rid of it or will it come back each year? Does it hurt the tree? Is there a preventative that we can do in the spring to keep it away? The tree is still young. Should we try another variety of tree? We're concerned because as it gets bigger, we may not be able to treat it ourselves.

Will this spread to other trees in our yard? We also have Winterberry hollies and a Seven Sons tree. Our nearest neighbors have Maples and a Willow.