Recommendations for coping with large numbers of aphids
A couple of years ago I had my (very) small front garden professionally re-designed and replanted. I now have a beautiful (if small) chamomile lawn which is bordered on two sides. The side border contains shrubs such as flowering blackcurrant, spirea and a small lilac which were left in-situ when the garden was redesigned. There is a small pond in the corner between the side and front borders, with just a dwarf lily in it.
The front border was replanted with perennial plants such as geranium, lupins and a few others which I'm afraid I can't remember. (Sorry. I'm not much of a gardener I'm afraid )
However, in the 3 summers since the work was done the plants seem to have become more and more susceptible to aphids. There is a council owned tree, swarming with aphids, directly overhanging this part of the garden, and though I never noticed the problem before the replanting, it positively drips honeydew onto my plants, which I understands draws the aphids to them.
I have tried hosing them off, and spraying the plants with soapy water, but even though this gives a temporary respite, the plants underneath are grey and sickly.
I have made up my mind to replant this year, but don't know what plants might be able to resist such a heavy infestation of aphids,and what treatments I should use to help them stay healthy. I would rather not use chemical sprays if possible, and I don't want to lose the aphid eaters from my garden (dozens of ladybirds (probably all harlequin though), so I am quite happy for there to be some aphids, as long as I can control them.
I am open to any ideas that are within the scope of a very non-green-fingered gardener.