Solomon's seal is lovely ground perennial that thrives in moist and low-light areas, like woodland gardens and near shady walls. Solomon's seal has white tubular flowers that hang off of the plant like bells. Most varieties of Solomon's seal are hardy through USDA zones 3 to 9. If Solomon's seal is grown in a warmer climate, you won't need to prune it except to control its growth. However, if your plant dies back in the winter, pruning Solomon's seal in the spring is necessary.
Prune Solomon's seal in the early spring. Remove any mulch or ground cover from the Solomon's seal as soon as the ground thaws out.
Remove the dead leaves from Solomon's seal.
Cut back the dead vines to 2 or 3 inches above the base of the plant. Remove any diseased vines at the base. Leave any live vines alone.
Divide the Solomon's seal at this time if it is crowding itself out.
Add compost or manure to the ground around Solomon's seal and work it into the soil to the depth of 2 to 3 inches.