GETTING YOUR POND READY FOR WINTER

By the Pond Lady

Signs of autumn are springing up everywhere. Leaves are turning colors, birds are gathering for their flight south, pumpkins and apples are being harvested and the blankets are being put back onto the beds. Sunscreen is being traded for sweaters and sweatshirts. Water lilies and other vegetation in your pond are slowing their growth and fading. They are getting ready for dormancy. Fall is upon us. Time to start preparing our ponds for winter and our fish for their long winter's nap. Transplanting and dividing of your pond plants should be left until spring. Now is the time to remove all fading foliage from marginal plants. I do not trim my marginal plants down until after the first frost. In areas where the water lily beetle is prevalent, they love nothing better than the dying foliage of your marginal plants where they can hide for the winter. Do not fertilize your plants anymore. Remove and bring indoors your tropical marginal plants before the first frost. To protect your hardy water plants, lower them to the bottom of your pond.

Now is the time to install a protective net over the pond if you have a lot of falling leaves. Plastic bird netting is available at most garden centers. You can insert a stick or garden rake into a potted plant to give your net a higher point, like a tent. This will allow the leaves to be swept from the net. Do not allow the net to drape into your pond. Fish and frogs can become entangled in the net. Remove the leaves regularly from both pond and net. Keep them picked up from your yard so that the wind does not blow them in the pond. Repair any damages and leaks before winter. Reseed your biofilters with bacteria. This will help maintain good water quality during fall. I use a product by Microbe-lift called Autumn Prep. This is for winterization of your pond and works in water temperature under 55F. It will help to decompose the leaves, scum, sediment, and other organic matter during fall and winter. It is also all natural, nontoxic and nonpathogenic and contains psychrophilic which is a cold weather bacteria. You can purchase this at almost any nursery that sells pond supplies. There are other products out there but I have never used them. Remove all dead leaves and such from your pond. If you have a skimmer you will want to clean it at least once day to prevent blockage.

Start feeding your fish food that is higher in carbohydrates and lower in protein. Carbohydrates will fatten your fish up for the long winter. Your fish do not hibernate during the winter. Their metabolism slows down as the water-cools down. If we fatten them up before we quit feeding them they will have enough to live on through the cold winter months. Start feeding your fish only once a day until the water temperature stabilizes below 55. DO NOT FEED THEM AGAIN UNTIL SPRING WHEN THE WATER TEMPERATURE WARMS UP ABOVE THAT POINT. Even if we have some warm days during winter, do not feed. Several new pond owners lost their fish this past winter because they could not resist the temptation to feed their fish. Now your fish do not have the cover of the plants to hide from predators. Keep an eye open. The herons can still get to your fish through a net. Try some fishing line around your pond, about six inches from the ground. Crisscross the line across your pond also. A milk carton, large planter turned upside down with a hole in the side, drainage pipes or anything else that your fish can hide in will protect them from raccoons and other predators. Make sure there aren't any rough edges for your fish to cut themselves on. I use four large pots with a weighted down sheet of plywood laid on top (non-treated wood). This gives my fish someplace to hide under for safety to feel safe and also protects my plants. You can also use a liquid shade to darken your pond. This will also keep the burst of algae down in the sunny winter days and early spring.

Clean your filters and store any pumps or equipment you won't use during the winter. Remember to store oil-encapsulated pumps in a bucket of water that won't freeze to keep their seals from drying out. Place your de-icer or bubblers in the pond. Whatever method you use, remember to always keep an opening in the ice (pond) so that the gases can escape. Your fish will survive in as little as 18 inches of water as long as it does not freeze solid.

Enjoy the fall colors but do not get caught out in the cold.

The Pond Lady / Darlene Jennings
President, Mid-Michigan Pond & Water Garden Club
MSU Advanced Master Gardener

 

 

How to Choose a Pond Site
Designing a Pond
Edging for a Pond
Pumps
Spring Cleanup
Plants
Summer Cleanup
Waterfalls
Water Gardens
Winter

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