I suppose you could,but personally I don't think I would add them to mine..probably just me..as they breed like..well,willow saplings ! :o)

Why not do as i do with the chippings,
Use them for a winter mulch,
They'll give you much more value that way by keeping the roots etc free from freezing conditions.

"Thank you" both in that case I will keep the chippings dry until the winter then use it as mulch.

Dungy's suggestion is a much better idea..:o)

I'd put them in bags keep them damp and let them 'rot' for a bit, like you would with leaf mould. If you keep them dry when you put them on the beds they will deplete the soil of nutrients initially as they start to decompose.

Thank you "Seaburngirl" I think I will need at lest two of those big one tone builders bags but will perhaps give it a try.