Natural water gardens—ponds, streams, waterfalls—are low-maintenance ecosystems. Winter prep ensures they emerge healthy in spring.
Remove dying vegetation—reduces organic load. String algae bloom is normal (plants dormant, nitrates available). Don't panic. Control: net leaves, remove debris. Good housekeeping = algae management.
Marginals: cut to 1" above water. Exceptions: cattail, sweet flag, corkscrew rush, iris—leave for winter structure. Deep-water lilies: pinch to 1" above crown. Refresh soil/gravel if needed.
Freeze zones: move hardy plants deeper. Tender floaters (water hyacinth): tray with water, frost-free storage.
55°F consistent: stop feeding entirely. Stop bacteria treatments. Turn off waterfall during large nightly temp drops (>5°F change stresses fish). Stabilize temperatures.
Keep small area ice-free (de-icer or aerator) for gas exchange. Critical for fish survival.
Remove, clean, store filters/pumps indoors. Spring: reinstall, restart, enjoy.
Your water garden sleeps. Help it dream well.
Milky White Water in New Pond: Causes and Cures
Persistent Green Algae in Large Koi Pond: Filter Maturity and Maintenance
Fixing Cloudy Pond Water and Black-Coated Waterfall Rocks
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Chronic Cloudy Water in a Sun-Exposed Pond: Fine Particles from Roots and Fish
Bubbles on Pond Surface After Refill: Normal Physics, Not a Problem
Fastest Way to Drain a Vandalized Pond for Cleanup
Clearing Murky Pond Water: Sand Filter Conversion & Fish Selection
Winterizing a Shallow Multi-Level Pond in Zone 5
Lowering Pond pH with Muriatic Acid: Concrete Pond Solutions
Emergency: Pond Losing Water in Freezing Weather
Adding Fish to a Rain-Fed Frog Pond: Filter and Species Advice
Persistent Murky Water in a 3000-Gallon Pond with Bog Filter
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