For now, leave the leaves on it as long as they are green, since they are putting energy into the roots, if you cut off green leaves, you will never get thick stalks. Even big roots need 2-3 years to become strong enough to harvest stalks for any length of time.

Thanks Tug, but eventually I pull them up, cut them up small and put them in the compost bin ? ?
Then cover the root in well rotted compost or similar ?

I wouldn't remove them at all just add your well rotted manure or compost round the base of the crown and let them rot back naturally.

Thanks M, sorted !