Wait for the leaves to be fully opened and you can pull from May to August. This information applies to the UK, other area may have different harvest times
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.
rhubarb is a plant that you can eat when it is cooked
Animals should not be encouraged to eat rhubarb
Rhubarb is the whole plant. You eat the stalks of the plant.
Any animal should not be encouraged to eat rhubarb
True possums (those found in Australia and nearby islands) do not eat rhubarb leaves.
tannins
That is the best time if it is ready to be harvested
Allow the plant to establish for one year before taking the first harvest. Select three of the largest stalks, wait for the leaves to open before pulling from May to August
No! Rhubarb contains oxalates, which can affect the digestive, nervous, and urinary systems.
Yes it is OK to eat the eggs....the poison of the rhubarb leaf is not transferred to the egg. The chicken will not eat many, it will get wise to the fact it is not good to eat rather quickly.
Animals should not eat rhubarb, they will certainly need the attention of a vet. as soon as possible