"Alan Gould" wrote in message
...
In article , martin
writes

why is pyrethrum not allowed Alan?

It becomes unsuitable when it is processed from plants in the
chrysanthemum family into pyrethrins [esters] for herbicidal or
insecticidal use. In the botanical form, the same plants can have
beneficial uses, e.g. as in the use of Feverfew for aches and pains etc.
I use an infusion of that admirable plant as a nerve tonic and pick-me-
up -- often after a session in urg! :-(

I have not yet seen the answer to the question.
And what do the words "in the botanical form" mean in the present context?

Franz