Posted: 18/04/2014 at 06:27
It's not anything to do with the shrubs in your garden. The mosquitos will be breeding in your pond - do you have fish in the pond? They will feed on the mosquito larva so that should help. Check that you don't have containers of standing water in the garden - mozzies will breed in a teacupful of water.Keep waterbutts securely covered. If they're getting into waterbutts float a small amount of cooking oil on the surface of the water - that will stop the larvae breathing.
I don't know of any plants that will keep mosquitos away - I do sympathise with your family member - I used to be bitten really badly by insects and on several occasions had bad reactions which required antibiotics, so I don't blame her for keeping indoors when the mozzies are around (my guess is that it's a female who is being badly affected - it usually is. If it's any consolation to her, once ladies get to 'a certain age' the mozzies seem to ignore us )
If you want to sit outside in the evening, burning citronella candles in the sitting area will help. I can also recommend that those badly affected should use Avon's Skin so Soft dry oil spray - it's used by the army when on manoeuvres on the west coast of Scotland, to keep insects away.