Can I clean soil?

[Thighdentitycrisis]

I have removed an old arum lily from a huge planter. It was totally root bound and had some kind of fungus I think that was making the leaves pale and mottled.

Is there a way to clean the soil in there as I remove all the small tubers and roots? I dont want the rest of the garden infected, and I don't have a way to dispose of soil?

I'm also paranoid that by sieving it I to remove the Arum I will spread it all over!

If it was a small amount of soil you can just put it into waste, if you have no other alternative. What we usually do with unwanted soil is put it under a bush or something away from the main planting areas.

You can't clean soil as far as I know.

yes its a big planter, if I sieve all the bits of root out I will see how much is left to dispose of, I could bag it and hide at the back as a last resort

If it was making leaves pale and mottled, it sounds more like a virus than a fungus, and thus likely to be specific to the arum lily. Another alternative is red spider mite, which would make the underside of the leaves look like they’d been dusted with pepper