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My lilies are growing outside the pots! How do I divide my water lilies? | Decorative Ponds & Water Gardens Q & A


My lilies are growing outside the pots! How do I divide my water lilies?

Q: My lilies are growing outside the pots! How do I divide my water lilies?

Susan – Centreville, MI

A: Lackluster growth or blooms on your water lilies last season is and indication that it’s time to divide them. Early spring is the best time to divide your water lilies but most varieties of hardy water lilies can be divided anytime during the growing season.

For easiest access, you may want to divide your water lilies during your spring cleanout. Hardy water lilies should be divided every 2-3 years to ensure your lilies are producing beautiful blooms season after season. Dividing lilies may seem complicated, but our step-by-step process will explain exactly what you need to do.

Step 1: Remove lilies from pond or container. Carefully move the plant to a workspace and remove from its container. You may need to cut open the basket depending on how root bound your lily is.

Step 2: Rinse off any old soil and remove roots that are not attached to the plant. Split the crown of the plant with a sharp knife to cut through the creamy white rhizome, saving the youngest parts of the clump, typically around the outside edge, for repotting.

Step 3: Cut the tuber down to size. You can safely cut the tuber down between two to three inches on the growing part with a sharp knife. This can be increased to five to six inches on longer plants. Remember to also cut off new buds and older leaves, so that the new root system has a chance to grow.

Step 4: Use Plant Bags or Plant Baskets to replant your water lilies. Plant each tuber with the growing tip facing outward. Fill in around the tuber with aquatic planting media, such as Microbe-Lift, making sure the roots are spread well and the crown is sitting just below the soil surface.

Step 5: If using a plant basket, place in shallow area of pond to encourage faster growth.

Step 6: Once new leaves have reached the surface, lilies can be moved deeper into the pond.

Don’t forget to fertilize your water lilies monthly during the growing season to keep your plants healthy and gorgeous. Remove spent blooms and old leaves to encourage new growth.

Pond Talk: How often do you divide your water lilies and other aquatic plants?

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2 Responses

  1. I would like to put my overgrown water lilies from my small pond into my big farm pond. there is bluegill and small mouth bass. will they leave my lilies alone?

    • Hi Janice – Yes, the Bluegill & Bass should leave the water lilies alone. I would probably leave the lilies in pots to prevent them from overtaking your farm pond.

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