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We just had our first freeze. How do I clean up my plants? | Decorative Ponds & Water Gardens Q & A


Q: We just had our first freeze. How do I clean up my plants?

Q: We just had our first freeze. How do I clean up my plants?

Barb – Sterling, CO

A: Brrr! It’s certainly getting cold outside! Your aquatic plants are feeling the chill too, so now is a perfect time to clean them up and put them in a warmer place for winter. So bundle up, pull on your hip waders and Aqua Gloves to keep dry and warm, dig out your easy-to-use Pond Scissors and Pliers—and let’s get busy!

Hardy Water Lilies

Hardy water lilies can tolerate cooler temperatures than your tropical varieties, but they need to be kept in a place that won’t freeze, like the deepest areas of your pond. Now that you’ve had your first frost, trim the lilies’ foliage back to just above the root ball and submerge the plants as low as they’ll go for the winter. Come spring, the greenery will reemerge healthy as ever from the plants’ crowns.

Tropical Water Lilies

Tropical water lilies prefer warm temperatures all year-long, so these plants will need to be completely removed from your pond and relocated to a protected indoor space for the winter, like an aquarium or large bucket inside your heated garage or workshop. Check out this article for a step-by-step guide to overwintering tropical plants.

Marginals and Bog Plants

As with hardy water lilies, your marginals’ and bog plants’ foliage will need to trimmed back to just above the soil with pond scissors. Then sink them lower into the deepest parts of your pond where the water remains unfrozen during the wintertime.

Floating Plants

Unless you live in a climate that doesn’t freeze, floating plants like hyacinth and water lettuce won’t survive the winter. Plan to remove them from your pond and toss them in your compost pile. If you leave them in the pond, the dead plants will decompose and cause water quality issues through the wintertime.

Pond Talk: If your aquatic plants are planted in the soil rather than a movable basket or pot, do you do anything special to them to prepare them for winter?

Trim & Remove Plants with Ease - Pond Pliers & Scissors

3 Responses

  1. Our pond lilies must be of the hardy variety. We bought them at Wal-Mart maybe 6 years ago. We have done nothing to them and they come back every year. They have lots of roots in the bottom of the preformed ponds. I usually clip (pull) off the lily pads back at the plant as they turn from dark green to a yellowish color but have let the green pads just die back on their own. So far, so good! If I remember correctly, they were 3 for $10. A great bargain.

  2. Question–I have a “Floating type algae’-I think it is “Flamouse” type What can I treat with??

    Thanks—Frank

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