Early spring dig in sheep manure around the plant. Or as my father used to do in the winter cover ground around with farm manure carefull not to cover crown. Rhubarb a fantastic plant comes up year after year with very little attention. Rhubarb tart Mmmmm yummy my very favourite followed closely buy rhubarb crumble. Custard with stewed rhubarb, Rhubarb jam, o stop me.