Hi Steve,
I have come across Rust on my Hawthorns and Junipers sometime back.They
appear as galls.

Yes, and soon they'll be getting nasty slimy orange spore masses. But, those are
only on the upper parts of the tree, yes? The galls people were talking about
were root and crown galls, I think.

I had to keep my Hawthorns away from all my other trees to
prevent it spreading.

Generally good sense, but actually, the only trees you had to keep it away from
were junipers. Even other haws wold have been fine - those rusts have "alternate
hosts". That is, the spores from the form on haws only infects junipers, and
vice versa.

I eventually dumped all the Hawthorns.

That's one real solution, alas :/ as long as your near neighbors don't have haws
in their lawns.

Rusr usually affects apples, but I was lucky

Lucky? Well, so far! The cedar-apple rust is a different species from the
cedar-hawthorn rust, I believe. Our own Nina Shishkoff authored an excellent
short article on the rusts in the ABS's journal not long ago (would be
worthwhile to have that on the Web somewhere!).

See Dr. Nina, I *have* been listening to you!

Anita
Northern Harford County, Maryland, USDA zone 6
Go forth under the open sky, and list
To Nature's teachings.
- William Cullen Bryant

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