Would a dumpy bag rot over two years (leafmould)

I have mowed over a large amount of leaves and they are now too small to pile into a wire cage to rot down (unless I use the small honeycomb stuff - there's an idea). They are in a dumpy about a third full at the moment and I could take them up the allotment and leave them in the bag behind the shed but I am concerned I may come back to a pile of leafmould and a whole load of plastic threads if the bag rots.

My options are:
- the dumpy bag
-  a dalek composter with the lid left off so they get enough moisture and air
- a fine gauge wire bin

any suggestions?

Yes - the 1 metre cubed ones that sand etc come in - was thinking of rolling the sides over and leaving behind my shed for a couple of years. The woven material would allow moisture and air to circulate while they rot.

- or black compost bags as you describe. Not sure if I have enough though.

Thanks Yorkie - do you mean the posh grade bin bags? I can't imagine the value ones that Mrs K buys would be photo-stable for two years.

You could double bag, fist in the black bin bags, then in the ton bags with the top folded over, but wet the leaves well first. You could also throw in a good spade of garden compost to get some worms in there.

I have mowed over a large amount of leaves and they are now too small to pile into a wire cage to rot down (unless I use the small honeycomb stuff - there's an idea).

Hmmm ... I wonder if the wide-mesh of the wire matters?  They will clump down and form a fairly dense block, so I think even a wide mesh will retain them.  Might need something on top to stop them blowing about - a piece of old carpet, for example.

I think I'm moving towards the black bag - compost bags if I have them - idea and leaving them behind the shed to rot down. A dalek composter seems a waste of a composter and I really don't want to be picking dumpy threads out of my leafmould if it does fall apart over time.

- must have some compost bags somewhere that I didn't turn into hanging basket liners!

Kirpi, I can be sure that the builders' bag you suggested would not rot after two years because I had one filled with chipped bark for at least this length of time: the bark composted down a lot and the bag was unscathed. the same bag has been used for various other things since and is fine.

I composted down leaves in black bags, and had some amazing compost as a result but I did it in black bags with holes poked in them. They did break up however and I had to extract the plastic before using the compost. It did take 2 years however, but I used whole leaves. Yours are chopped up so should go more quickly.

Never thought of using the builders' bag for leaves. I think if the top was covered to keep them moist they would rot down well.

imho .... go for it!!! 

Our builders bags don't have an inner plastic, and I've had big weeds like nettles and docks in one for several years with no problems, and Brian has had one out the front for a couple of years still with ballast in it and its still whole.