Stones are always ready for us to be creative with.
Stones just want to be used.
You get the sense that the material is constantly looking for some way to be put together.
You could say that they are always in season.
Whereas pumpkins are only in season for a little while each year. They can only to be built with after they've matured and before they start to rot. You can't build pumpkin walls the whole year round.
Unlike pumpkins, potatoes or squash, stones are a fruit that is always in season.
They continuously offer us the possibility of taking part in the 'creative inevitable'.