The old one was made of railroad ties. Pros: Cheap and easy to assemble. Cons: Treated with chemicals that were possibly leaching into the soil. The boards warped, causing earth and water to pour out of the cracks. The rebar holding it all together kept stabbing the kids.
So it was worth it to buy three lengths of cedar, some L brackets and a few screws to throw together a new bed. It should last for many years and, well, it looks a lot better.
I’ve planted cooler weather veggies: radish, chard, broccoli, lettuce, bok choy. Hopefully the heat will hold off until I get a few salads.