Posted: 10/04/2014 at 20:54
I had them last year. Completly destroyed my lupin. I hit them with the hose in the morning and evening. Soapy water was applied evry other day it was that bad, but it didn't even dent them. These are not ordinary aphids! Some were probably about 3-4 times the size of normal ones. They breed like crazy too.
I refuse to use chemicals ( i'm trying to give our wildlife a helping hand)I have been looking for natural ways of controlling them but apparently our natural predators (ladybirds, lacewings, bluetits etc.) Don't seem to bother with them. I seem to recall that they are a North American species. Companion planting with garlic, onions , chives and nastursiums was also mentioned but no idea if any of it works.
I've Never not had a lupin but I think I will give it a miss this year, shame they are my favourite plants