john wrote:
can anybody recommend anything else besides pea-stone to put on top of
the plastic ? I remember my dad had these long , heavy, iron bars he
would use to put on top of the plastic when he did his gardening
outside. I forgot what their called. Maybe that would be better.

Are you thinking of "rebar"? It's cheap but I like the idea of pea
gravel much better so it contours with the surface much better.

Tony