How to Fix a Packed Asparagus Fern Root Ball

Determine that the asparagus fern is rootbound before repotting, which is usually not needed until the roots become so packed that they raise the level of the potting mixture to about an inch above the pot rim. You'll notice that the potting mixture dries quickly and growth slows because water isn't able to permeate the roots.

Water the asparagus fern several hours before you plan to remove the plant from its container.

Place the palm of one hand on top of the soil. Secure the base of the plant between your fingers.

Invert the pot and remove the asparagus fern from the container, using your free hand. If the roots are badly compacted and don't slide easily from the pot, loosen them by thumping the pot with the palm of your hand.

Tease the compacted roots apart carefully with your fingers. Use a clean, sharp knife to cut badly tangled roots.

Trim long roots with a pair of clean pruning shears. You safely can prune long roots by up to two-thirds of of their length.

Make vertical cuts in the root ball if the roots are compacted so tightly that untangling and trimming them is difficult. Use a clean knife to make four vertical cuts from the bottom to the top of the root ball. Make each cut about 1/2 to 3/4 inch deep. Trimming rejuvenates the roots and stimulates new growth.

Transplant the asparagus fern into a pot one size larger. Use fresh potting mixture.

Water the asparagus fern thoroughly. Don't water again until the top of the potting mixture feels slightly dry to the touch.