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Talkback: Plant diseases and busy Lizzies
flowering rose
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in Talkback
is it because we are inporting more plants and the movement of people round the world.we are no longer confined to area and this makes for viruses to spread.
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Downy mildew is a fungus disease, but virus ones can also spread easily in different ways.
I'm not sure where this particular disease came from, but it certainly spread quickly! All we can do is avoid growing problem plants and choose resistant ones instead.