Hi Caroline, welcome to the Vine.
You can get Black Polythene that will break down & rot after 12 months now. It is designed for horticultural use but costs a fortune for someone like me. I agree with the recycling Idea but sometimes you have to admit defeat & just take stuff for disposal.
Knowing the potential problems with carpets I always reccomend that folks use the black plastic that is used on Silage pits ( second hand is OK) . But I made the choice to use the carpets myself ( I suppose it's a hang up from work where we have to consider health & safety first) Also I'm not totally organic, I have to resort to some sprays to control things like White rust on Chrysanths which is hard enough to contain if you use sprays, the only non chemical control is a bonfire!
We pays our money & takes our pick
