United Kingdom 
TREATED LAWN FOR WEEDS . TURNED BLACK AND STIIL GROWING HELP
24 Oct, 2010
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« my cordyline palm austrailas was hit by frost it almost killed it ...
United Kingdom
TREATED LAWN FOR WEEDS . TURNED BLACK AND STIIL GROWING HELP
24 Oct, 2010
Previous question
« my cordyline palm austrailas was hit by frost it almost killed it ...
If your lawn treatment included a moss killer, it may just be the moss that's turned black, as it does when treated. If so, rake it all out.
Note that these treatments should not be used past mid July.
24 Oct, 2010