Here in Whatcom County, WA, some friends have been talking about how their plants had shriveled and died this season after using a formerly reliable commercial compost. Today this was the lead story in The Bellingham Herald: http://www.bellinghamherald.com/2010/08/01/1549538/herbicide-tainted-manure-wilts.html
Unfortunately it doesn't specifically address how home gardeners (as well as commercial organic farmers) can avoid this problem in the future. Few of us can produce all the compost we need. Would it be best to avoid compost that has any manure in it? Seems the only solution I can think of unless companies can assure us that the manure they use is only from cows fed only on organically produced silage. Any thoughts?