Sally Holmes wrote:
There's quite a bit of moss growing on the tarmac drive outside my
front door. It's on the north side of the house so well shaded. It's
got much worse this year and I want to get rid of it before it
freezes while saturated with water.

The drive slopes down from the house and has shrubs in beds on each
side. Any liquid that's put on the moss runs into one or both of the
beds and anything residual will get trodden into the house.

Given the standard of the rest of the house I don't expect the tarmac
to be of very high quality so I'm wary of using a high-pressure
washer.
Is there anything that will kill the moss but degrade on contact with
soil? I want to be safe but don't want to kill the plants.



Armillatox used to be ok in that sort of situation but is no longer approved
and any off lable use would be illegal. Armillatox is now only sold as a
natural soap - maybe your drive is dirty and you need to wash it?

pk