The Claim: 100% Compostable. Really?
The cup claims to be 100% compostable. I've read these types of cups really only compost in commercial composting operations.
However, I'm going to see what happens in with my semi-anaerobic trash barrel composting method. I've been dumping a bucket or two of clippings into the trash barrel for months and months now, haven't harvested a bit, but there always seems to be room for more clippings every few days. I've started thinking of it as more of a digestor or worm-bin than as a true composter. It's full of very happy earthworms.
Worn-out trash barrel recycled as a composter:
In it goes:
I'll be checking on the decomposition process of the cup, and update you on how fast it does or doesn't decompose. In the meantime, Hydrangea 'Ayesha', looking like a pink river, and Sedum radicans. Hard to get a beauty shot of a composter.
Update 12/20/2012 -- nearly 18 months after the original post. I finally harvested that bin of compost. The cup hasn't broken down all that much. How will it look in another 18 months?
Update 4/29/2013: The cup has broken into strips but each strip is still totally recognizable. Slow indeed. Back into the pile you go...