Ask the Expert: Peace Lilly out growing pot
I have a peace lilly and have had it for about 11 years (one of the few I haven’t killed) and I have it in a huge pot but it seems to be growing close in I want to know how can I separate the plant, it has a huge root ball and replant to give it more room to grow to it’s full potential? Sandy

Reply:
Although peace lilies like to be a little root-bound, you should re-pot or split them when the roots overflow the container. It seems your peace lily is definitely overgrowing its container. In your case, I would split the plant rather re-pot it. You will need:

• Pot (around the same size as the one it is now)
• Potting Soil (a good houseplant potting soil)
• Large Serrated Knife

Begin By removing your plant from the container. Don’t worry about tearing the roots or losing a few leaves. Lay the plant on its side. This will give you a view of the root system as well as the foliage attached to the rootball. Now you are going to cut the plant into two pieces.

To do this, take the knife starting at the bottom of the rootball and work it back and forth until you have made a cut all the way to the foliage. Now you should have two separate peace lilies. Each one will have foliage attached to a portion of the rootball.

Now place one of the peace lilies in the center of the original container. Be sure the rootball is at the same depth it was before the plant was split. Then add soil to close the vacant space in the container. Be sure to water it when done. This will get rid of any air pockets that have formed around the roots.

Now pot the other peace lilies in the new container. Once again, make sure the rootball is planted at the same depth as it was in the original pot. Fill in the vacant space and water.

These plants will go through a little transplant shock and may wilt. Resist the urge to pamper them. Instead, place them in the same environment as before and water accordingly. In a couple of weeks, you will have two thriving peace lilies.

Good Luck and keep me posted.