Reuse should be the TOP priority in the recycling scheme.
These pots use considerable energy to be made into something else.
It'd be worthwhile to know a landscaping company, as they'd have larger sizes of pots.
Many years ago we were travelling through Atlanta Georgia.
There was a huge Architectural Salvage yard and warehouse.
We wandered through the yard: stone, brick, "gargoyles", fountains, iron gates, bathtubs, huge marble and stone driveway "lions".
Their warehouse was chock full of magnificent old--and huge--chandeliers, 50-foot long carved mahogany hutches and buffets, everything from old mansions.
Even a restored antique car section. Magical!
Here, in Western Canada, where the oldest building on the block seems to be a Midas Muffler Shop,
we're always tearing things down, rather than reusing existing buildings.
Barb