How to control pond weeds cheaply

Written by cullend
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How to control pond weeds cheaply
Weed control is important (pond image by Tomasz Kubis from

Pond owners are faced with myriad issues when it comes to maintenance whether the pond is used for fishing, boating, swimming or wildlife observation. Possibly the most common of these issues is pond weed control. Pond weeds can catch fishing hooks, choke entire waterways and simply get in the way of people enjoying their ponds--not to mention the detrimental effects they can have on oxygen levels in the pond. Despite the potentially costly consequences, pond weeds can be controlled economically.

Skill level:

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Things you need

  • V-style weed cutter
  • Weed rake
  • Nylon rope
  • Triploid grass carp
  • Pond dye

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  1. 1

    Wield a V-style aquatic weed cutter with a handle attached to at least 20 feet of nylon rope. Throw the cutter into the pond, making certain to hang onto the rope, where you know submersed weeds are growing and allow it to sink to the bottom. Pull the cutter in towards the shoreline to quickly cut away weeds at their roots. Once cut, the weeds will float to the surface.

  2. 2

    Use a rake with 3-inch teeth to rake in the floating debris. Using the same technique in the previous step, toss the rake into the pond and retrieve it via the rope attached to the handle. Rake the debris a few feet up the shoreline. Do not allow the weeds to remain in the pond and decompose, thus releasing their nutrients back into the pond only to fuel yet another weed growth cycle.

  3. 3

    Stock five triploid (sterile) grass carp per acre. Cover any drain or stand pipes that may allow the fish to escape should your pond fill to those levels. Grass carp will eat many types of submersed weeds.

  4. 4

    Add blue or black pond dye to your pond once every four months. Pond dye creates a natural shade in your pond to filter out sunlight that would otherwise promote pond weed growth. Dyes are not toxic to fish or any aquatic life.

Tips and warnings

  • If it's in the budget, herbicides can be relatively inexpensive depending on what weeds you're trying to control.
  • Do not allow weeds to decompose in your pond. As large amounts of weeds break down and decay they also consume oxygen. As oxygen levels deplete, fish are in danger and can die.

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