On Thu, 3 Feb 2011 22:44:17 -0000, Janet wrote:

In article ,
says...

Whilst doing a bit of tidying up today (before the wind and rain!) I
found tucked behind the copmost bins a couple of old (ie 2009) grow
bags.

I usually chuck these into the compost bins whilst turning the full one
into the empty one, but forgot these.

Given that they have had a year or so doing nothing, would the compost
they contain be any use as a potting compost or for the flower tubs that
swmbo wants every year?

If not, it will go into the compost bin at some stage.

Their fertility will be depleted by the crop that grew in them, but
if you add some granular or pellet fertiliser I reckon the compost
should be fine to re-use in tubs. I'd also mix in some of your home-made
compost.

As long as they smell sweet, and haven't turned acid and developed
green algae and fungal growth inside. I cheerfully reuse the previous
year's growbag stuff in this way, but I've never tried it with
two-year-old second-hand material.

--
Mike.