The decoction of tansy it is a good natural pesticide for plants. Together with the nettle macerate and the horsetail macerate, the decoction of tansy it should be part of the organic pharmacy for the vegetable garden, garden and house plants. Especially when threats come from aphids and plant lice, the infestations against which the tansy puts in place the maximum effectiveness.
The tansy belongs to the family of Composite, is widespread in the countryside and is not difficult to find along the roadside, although that is not the best place to collect it as it could be polluted by vehicle exhausts. If you need to get the tansy, better an uncultivated field where you will distinguish it for its yellow tip inflorescences.
Of the tansy in the past it was also used for medicinal purposes, mainly used as a dewormer, but then herbalists put it aside a bit due to the high concentration of toxic substances. The same substances that, properly diluted in decoction and maceration, work very well against plant parasites. And not only that: the farmers once kept the tansy in bunches next to the wheat to keep the field rats away.
How to prepare the decoction of tansy
A decoction (or infusion) of tansy it is prepared by boiling 30 grams of fresh tansy (which can be replaced by a pinch of dried grass) in 1 liter of water. It is used diluted in a variable percentage depending on the intensity you want to give the treatment, but keep in mind that unlike the decoctions of other plants, the decoction of tansy it is not phytotoxic and therefore the treatments can also be in high doses and repeated.
For the preparation of the decoction of tansy the aerial parts of the plant, leaves, flowers and stems are used, not the roots and therefore there is no need to uproot. The solution is sprayed on the leaves of infested plants and is immediately effective against aphids, lice, lepidoptera and some mites.