Poloystyrene (usefull or not)

[waynebeddall]

Hi at work I have lots of 20mm polystyrene sheets that are used for packaging and is just skipped. Can this be used for anything on my allotment or to insullate anything I know seems like a strange question but if its free and helps then why not.
Any ideas appreciated

[rustylady]

Polystyrene slabs are good for insulation. Lining cold frames, or standing pots on in the greenhouse, etc.

[Hazel at the Hill]

Can I use a piece of polystyrene to stand my Prize Pumpkin on? Have just noticed first flower with baby pumpkin attached...

[terrier]

Can I use a piece of polystyrene to stand my Prize Pumpkin on? Have just noticed first flower with baby pumpkin attached...

I was going to suggest that! I grew my first ever courgettes last year and the ones that got a bit big, I slipped polystyrene trays underneath them to keep them away from the soil. It worked a treat.

[Flummery]

In the past I've used it broken into chunks in the bottom of big containers for drainage - the ones where they weigh enough empty and you don't want to do yourself a damage if you ever have to move them! Mind you, when you come to dismantle the thing, all the roots taffle up in the polystyrene and it's difficult to disentangle.