Battling with aphids (greenfly) in the garden? Commercially available insecticides often contain a chemical called pyrethrum which is derived from nature. Rather than buying bottles of commercially prepared and potentially hazardous chemicals, you can harness the power of nature in deterring greenfly just by some clever planting.
Feverfew (Tanacetum parthenium) is a pretty daisy-like plant that contains pyrethrins – very similar to the chemicals in commercial sprays. Plant Feverfew amongst your flowers and it’s presence will deter the little insect marauders. Golden feverfew is a pretty plant in its own right – as the name suggests its foliage is a yellow/golden colour – and all plants will readily self-seed all over the garden if you allow them to. (This plant is also used as a traditional herbal remedy for migraine).
Whilst it is possible to make your own insecticidal spray or powder from these plants I wouldn’t advise it as it is toxic to bees. In its plant form it seems to work well enough for me and does no harm to bees. Some sources claim that it will deter bees from the garden, although I have never found this to be the case and have often seen bees visiting the feverfew flowers.