Choose a mature hosta clump in early spring or early fall
Water the plant thoroughly the day before dividing
Dig around the clump and lift it from the ground
Shake or rinse off excess soil to expose the roots
Locate natural divisions or separate crowns with visible buds
Use a sharp spade, knife, or garden fork to cut the clump into sections
Make sure each division has roots and at least one growing point
Replant the divisions at the same depth as the original plant
Space the divisions appropriately for their mature size
Firm the soil around each division
Water the newly planted hostas well
Mulch around the plants to retain moisture
Keep the soil consistently moist until the divisions are established