Welcome to Gaia! ::

So it's full-fledged summer here, and my dad came home with a crapload of pretty flowers and roses, but then my heart sank, because they were held in plastic pots.
I know theres biodegradable plant holders, but now, I don't know what to do with these! They'll take over a hundred years to start decomposing.
I asked my dad to put them all in a crate for me, but i don't know where to go from here.
I live in New York City, so I'm hoping there's gardeners or greenhouses that can take them in. If anyone knows of any companies that will take in and recycle them, or have any ideas of how to reuse them, any help would be greatly appreciated.
These are the types of pots we have:

And the little circular ones.