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Lupin
Shutterfly
Posts: 24
in Plants
My Lupins seem to have a fungal infection but I'm not sure what to do about it. I know one should avoid cutting Lupins back in the autumn but I cut off all of the affected leaves and disposed of them a couple of weeks ago . New foliage has grown but it too is affected. Is there a fungicide for this? If so, is it advisable to use it considering we have children and a cat?
0
Posts
It's just a bit of mildew, common at this time of year, don't worry about it they will be fine in the spring.
I'd hold off on the fungicide. Lupins at this time of year will deteriorate without warning and soon the frost will kill off all the foliage anyway. They do look scruffy so cutting down the foliage won't hurt them, a mulch overwinter will feed them and next year they will come up bright and breezy anyway. I've never found spraying at this time of year does anything to brighten them up. Powdery mildew, which this is, is part of the natural cycle at this time of year and will soon affect many perennials as the weather starts to cool and moisture increases.