I will add photos here soon. I had planned to photograph the stalks I brought home, but my mother-in-law loves it so much she ate it all before I got a shot.
I've never seen green rhubarb before and had to look it up. Yes, its "ripe". Its just a green variety. Rhubarb comes in red, green and all shades in between. And color doesn't relate to sweetness.
These green rhubarbs are all over our community garden. They must be the most prolific variety for us. Everyone shares the plants which are very vigorous. Mine are a division from another plot.
I still like the looks of a red rhubarb and will be on the lookout for another plant to add to my garden.