Wow I too am envious! I consider it a big day when one of my catts blooms! Just beautiful! Thanks for brightening my day! I too am interested in your shelves. I use tables in the greenhouse now, but my hubby has been saying for years, he intends to build shelves all along the walls.
I couldn't find 30 inch benches pre-made, so I used their 1.5 inch galvanized square rectangle conduit and fittings. The bench tops are the 13 gauge galvanized. All were cut with a metal cutting circular saw blade. Just be aware that they will be quite heavy! Here's a shot of a completed bench: