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appropriate chemical that will kill the moss but not the plants?
Moss likes an acidic enviroment. Increasing the PH might be the way
to go. I might suggest:

http://www.google.com/search?q=bordeaux+mix

help get rid of any black spot on your roses too.


BTW the plants are a yew tree and an azalea if that makes
Azaleas are acid lovers as well.. so a basic solution might be
detrimental to their health. Perhaps treating the soil in the
immediate vicinity with an acidifier (magnesium sulfate?) will help to
counteract the mixture.... of course, then you are playing with making
salts which may or may not be detrimental.

whee... isn't chemistry fun!?

--
be safe.
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Ich habe keine Ahnung was das bedeutet, oder vielleicht doch?
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