Hostas are easy to split. If you find that your hostas have become overcrowded, or simply that you have too many for the space in which you planted them, it's time to divide! Use a spade to unearth your hosta rhizomes, and gently brush the soil off the clump. Then, break the pieces of the rhizome apart, leaving at least one sprout on each clump you want to re-plant. Replant the hosta you want to keep, and choose what to do with the rest. You can replant the hostas in new areas of the landscape, give unwanted hostas to other gardeners, or simply dispose of your extra hosta clumps.