[m1ckz]

a plot near to me has what im told is rusty onions,,,,there colour is a rusty orange,,,,does this spread

[mumofstig]

yes it can, I usually get it on leeks rather than onions though.
I suppose it may make the onion tops die off earlier resulting in smaller bulbs.

RHS says

There are no chemicals approved for control of leek rust for amateur gardeners.

[allot2learn]

I'm getting something similar on my softneck garlic. Funnily enough, it doesn't seem to be affecting the hardneck types.

[m1ckz]

well,,,these onions turned out to be garlic ha haaaaa   and they say its normal, so no worries

[Salmo]

Rusts are usually specific to one plant and will not spread to other species i.e. onion rust will not spread to leeks, leek rust will not spread to onions. If you get rust regularly it is well worth looking in the catalogues for rust resistent varieties.

[mumofstig]

Leek rust can attack most of the Allium family, leels garlic and onions
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