From: utzoo!decvax!harpo!eagle!mhtsa!alice!npoiv!npois!cbosgd!cbrap!apwh
Newsgroups: net.garden
Title: Re: soil acidifiers needed
Article-I.D.: cbrap.143
Posted: Wed Apr 27 06:45:01 1983
Received: Thu Apr 28 04:52:28 1983
References: <330@ritcv.UUCP>

Adding organic material to the soil is usually the recommended way
to increase the pH other than the addition of aluminum sulfate or
other inorganic materials.  Decaying vegatation produces organic
acids which lower the pH.  This is the reason there is more talk
of sweetening soil.  Heavily worked garden plots tend to get lots of
compost, which lowers the pH.  For small areas I've read that coffee
grounds are especially effective, but for a 3000 sq.ft. garden you'd
have to be one heck of a coffee drinker.