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What's this orange powder on my purple oxalis??

(3 Posts)
Draylon Thu 05-Oct-17 18:24:15

Otherwise healthy, it spent the summer outdoors (Hants) but now the undersides of the leaves are coated in this bright orange powder!. I accept that it's probably v bad, if not terminal for the plant, but what is it?

TIA!

Trethew Thu 05-Oct-17 19:38:37

It's a fungal infection called rust. Not terminal but unsightly and weakens the plant. Try to remove as much of the infected material as possible to stop it spreading. Do not put it into compost heap.

Draylon Fri 06-Oct-17 11:32:03

Thanks!

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