Yep some sort of fungus that lives on both juniper and Pear. Fungus can infect plants half a mile apart according to daughter who is studying horticulture (I think that's what she said)
The dentist has juniper I only spotted that as you mentioned them. But they are over a mile away so it should be safe.
And indeed once a garden is setup, it's not too much work. Bar the eternal couch grass, weeds...but I'm not going for the "garden magazine manicured to sterility" look anyway.
No junipers nearby I guess I can get an apple if I want to play it safe,many nearby.
But where is the fun in that ;)
Rust is a fungal disease I guess?