In article ,
Stephen Howard writes:
|
| diseases that onions are prone to...but then follows standard advice
| not to compost diseased material unless you're sure your process will
| deal with it.
|
| You might not know the disease organisms were present on bought onions.
| If you imported certain onion diseases into your garden, it could take
| 8 years to get rid of them.
|
| True, but also true of diseases that affect other plants...brassicas
| for example.
| The same diseases could be bought in via seedlings too.
|
| Sooner or later you have to trust to luck and common sense.

Yes. The issue is made FAR too much of. Organisms that are
common and typically wind-spread are not an issue, as they will
arrive anyway. Ones without persistant, durable spores aren't,
either, as they will rarely transmit. This leaves a far smaller
number of possibilities than is commonly thought.


Regards,
Nick Maclaren.