"Pete C" wrote in message
...
johngood_____ wrote:
I want to propogate some 'Photinia fraseri' (red robin) and it says
that i need a cold frame.

I don't have room for one, but I have a window box with one of those
water reservoirs underneath which I have found very good for
propogating some cuttings before.

My question is; Is there any neat trick for getting some plastic
sheeting to sit over the window box please, to to create my own mini
cold frame?
Also should I make holes in the plastic for ventilation or not? Thanks
for advice.

What size is the box?
Pete C

Thanks, the size is 50cm long, 21 cm wide and 16 cm high. (my tape
measure doesnt have inches on it).