Plant in spring. Can also be divided in spring from old plant. How to Plant Rhubarb -
Plant at same depth, just at the crown of plant.
After Planting Rhubarb - In the fall put compost or manure on it.
Harvesting Rhubarb - Do not pick any rhubarb the first year.
The second year you can start to harvest, about ¼ to 1/3.
The third year you can pick more ½ to ¾. Do not pick after July 4. The plant needs to grow and replenish itself. Its good to feed it
with compost or manure again in the fall.