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This is just the bain of my gardening (well one anyway) of tiny white fly and green aphids getting to the base of the plant stems of spring onions, flat leaf and normal parsley,coriander etc etc. For whatever reason they seem to be hanging around all year but cause plants (parsley in particular) to start yellowing despite being put in good quality new compost. I have tried garlic water and soapy spraying but this never seems to get rid of them. This hot, humid weather doesn't help 
