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

That Govt. definition is not relevant to this thread because clover is
not considered to be a pest in organic gardening.

But it was by the OP, who wanted rid of it?

By means of a herbicide, not a pesticide. A selective herbicide at that
which would not harm his grass. Grass too may or may not be seen as an
welcome plant depending on the circumstances, but it is not a pest.

I agree that a person wishing to use poison to kill clover in lawns would be
advised to use a selective herbicide, but not that the terms herbicide and
pesticide are mutually exclusive, which is what you seem to be suggesting.

Cars, buses, taxes, trains, and trams are all different, and are customarily
used to meet different needs, but they are all passenger vehicles - even
when they are not actually carrying passengers. Similarly, poisons intended
to kill organisms for pest control purposes are all pesticides, even though
the nature of the pests may be very different. And, fortunately, it is not
mandatory to use a pesticide just because one encounters a 'pest' :-)