Those are great, Paddy! Granite would be really hard, I would think. Here I have limestone and a lot of sandstone. I might find a chunk of limestone sometime where water hollowed it out naturally, but the limestone here is very hard and very brittle. I'm not sure I'd have enough skill or patience to work with it. The sandstone, on the other hand, is plentiful in varied shapes, sizes and degrees of hardness. There's more hope I'd give it a try there. I think it would make an attractive container for lots of things, but semps might be the ideal plant.
