Choose a mature hosta clump with multiple crowns
Divide in early spring or early fall
Water the plant thoroughly the day before dividing
Dig around the entire clump and lift it from the ground
Shake or wash off excess soil to expose the crowns
Separate the clump into sections by hand or with a sharp knife or spade
Make sure each division has roots and at least one or two growing points
Trim damaged roots or leaves if needed
Replant divisions at the same depth as the original plant
Space divisions adequately for future growth
Water the newly planted divisions well
Keep the soil consistently moist until established
Mulch around the plants to help retain moisture
Avoid dividing during hot, dry weather