I have a three tier plastic mini-greenhouse (very much like this one here). At the moment it's empty but once I start having to raise seedlings it should fill up. My problems is that the yard is a bit of a wind tunnel and it's spent much of this very blustery year on it's side. I've tried weighing down the bottom with quite heavy clay plant pots but all that happened was that the pots fell over with the greenhouse.
Anyone have a better idea? Any ideas? Will tying it between my two pieces of guttering help, or am I just risking knackering my guttering? I'm think that a 5l water bottle, filled, may be better ballast. I need to sort this out before it gets anything fragile in it.