Rhubarb root is usually taken from plants four or more years old. It is dug up in the autumn, washed thoroughly, external fibers removed, and dried completely. The root is then pulverized and stored. And more . . .
All of it, the stalks are edible but the leaves and toxic
Only the stem. The leaves are toxic and the roots are not commonly eaten (but not toxic).
The stalks, or not the leaves or the crown (the root)
The stalk only, the leaves are poisonous
Rhubarb is the whole plant. You eat the stalks of the plant.
All of it. the part you eat is the stalks
rhubarb is a plant that you can eat when it is cooked
The Stem
Rhubarb.
Rhubarb actually comes in several color varieties; from green to speckled pink to ruby red. It is safe to eat the stalks of green rhubarb, but never eat them if they have been frostbitten, and never ever eat the leaves of the rhubarb plant, as they are poisonous.
The stalks are edible, the leaves poisonous
It the pink or red bit as you want to call it.
No, pet rabbits can't eat rhubarb. Rhubarb leaves are poisonous, and some sources not to give your bunny any parts of the rhubarb plant. Stick to plants you know are safe. See the related questions and links below for more info.
The part of the green pepper plant you eat is the fruit.
Animals should not be encouraged to eat rhubarb
I don't think so because rhubarb is a type of plant and that's a noun.