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Do pond weeds stop growing during the winter months? | Ponds & Lakes Q&A

Q: Do pond weeds stop growing during the winter months?

Q: Do pond weeds stop growing during the winter months?

Allen – Marcola, OR

A: Unfortunately, it’s tough to give you a definitive answer. The growth pattern of aquatic weeds and algae really depend on where a particular pond or lake is located. Weed growth in a Florida pond, for instance, will be different from weed growth in a Minnesota pond!

In general, however, you can expect to see different pond weeds pop up at different times of year based on environmental temperature, just like the weeds in your lawn. If your pond or lake freezes over, the perennial weeds will typically die back in the winter and re-emerge in the spring. Some plants, however, will continue to grow throughout the cold season, though at a much slower rate than you’d see in the warmer summer months.

Trouble surfaces when water temperatures drop to the point where your algaecides and herbicides become ineffective – but the weeds continue to grow. Algae Defense®, for example, stops working when the water is below 60° Fahrenheit, and the beneficial bacteria in PondClear™ slow down to almost a stop when temps fall below 50°F.

So what can you do?

When the chemicals and bacteria are no longer working for the winter, it’s time to turn to Pond Logic® Pond Dye. An effective year-round treatment, Pond Dye shades the water and reduces the amount of sunlight reaching the weeds and algae growing at the bottom of your lake. Less sunlight means fewer weeds, regardless of the temperature or time of year.

Pond Logic® Pond Dye comes in two formulations: Easy-to-use packets and quarts of concentrated liquid. To use the packets, which come in Nature’s Blue™ and Black DyeMond™, simply toss several in water at various locations around your pond or lake. The packet will dissolve and the dye will disperse throughout the water. To use the concentrated liquid, which comes in Nature’s Blue™, Twilight Blue™ and Black DyeMond™, pour the dye in several spots along the pond’s edge. There’s no mixing required.

If wintertime weeds are taking over your pond, consider adding Pond Dye. Not only will it shade your water and hinder weed growth, but it will also add to the aesthetics of your landscape.

Pond Talk: Do you battle weed growth year-round where you live?

Shade and Protect Your Pond Year Round - Pond Logic® Pond Dye Packets

How do I know which chemicals will treat my weeds? | Ponds & Lakes Q&A

Q: How do I know which chemicals will treat my weeds?

Q: How do I know which chemicals will treat my weeds?

Henry – Markesan, WI

A: Weeds. Whether they’re algae or submerged, floating or shoreline plants, they’re a nuisance—not to mention a potential hazard to your game fish and pond or lake health. In order to manage these green invaders, you should get to know them a little better. Don’t worry: you don’t need to be a Master Gardener to identify and treat them. Here’s all you need to know:

1. Know the Weeds

Before you start dumping chemicals on the weeds in your pond, you’ll first need to understand the different types of aquatic weeds that pop up in lakes or ponds. There are four basic categories:

  • Algae. Algae comes in three basic types: Planktonic, which causes the pea soup look in your water; filamentous, which creates blankets of stringy stuff or pond scum; and chara or muskgrass, which smells like musky garlic. When you take a closer look, these weeds have no defined root systems, unlike their other weed cousins.
  • Submerged. Submerged weeds live underwater. This group of troublemakers includes bladderwort, several types of pondweed, watermilfoil, parrot feather and hydrilla. They look like a typical plant, with leaves, stems and root systems.
  • Floating. Floating weeds generally reside in shallow water and have root systems that reach into the water or down into the soil, allowing their leaves and flowers to rise to the surface. They include watermeal, duckweed, azolla and even water lilies. When not kept in check, these floaters can take over a pond in no time.
  • Emergent. Emergent weeds live along your lake’s shoreline. These plants like to keep their feet wet; their foliage, leaves and flowers live out of water, but their root systems prefer wet, almost completely saturated soil. Emergent weeds include cattails, phragmites, purple loosestrife and bulrush.

2. ID the Weed

Once you identify the category of weed you’re dealing with, head over to our Weed Control Guide and try to match weed with the picture. For example, is it a floating plant with a root system? Then you’re dealing with a type of floating weed. Is it completely submerged? Then you’re dealing with a type of submerged weed.

Each weed included in our Weed Control Guide will describe the best treatment options to manage it. Not sure of the weed? Snap a close-up photo and e-mail it to us at pondhelp@thepondguy.com. Of course, you can always call us toll-free for advice, too, at 866-POND-HELP (766-3435)!

3. Treat the Weed

Once you’ve ID’d the weed, treat it with its appropriate herbicide, remembering to always follow label instructions when applying it to your pond or lake. If you have fish in your pond, we suggest treating in sections as sudden changes in water conditions can affect aquatic species. Treat 1/4 – 1/2 of pond at a time, while waiting 10-14 days between treatments.

4. Remove the Remains

Once the chemicals start working to kill the weeds, make sure you remove the decomposing foliage with a weed rake, like the Jenlis WeedRazer® Aquatic Weed Cutter. Why? Because anything dead will turn into muck and start the weed/algae cycle again—which is not something you want to happen, right?

Pond Talk: What tips do you have for managing aquatic weeds?

Broad Spectrum Pondweed Control - Pond Logic® Ultra PondWeed Defense®

I have a plant that looks like a cattail, but it has a plume on top instead of a catkin. What is it? | Ponds & Lakes Q&A

I have a plant that looks like a cattail, but it has a plume on top instead of a catkin. What is it?

Q: I have a plant that looks like a cattail, but it has a plume on top instead of a catkin. What is it?

Mike – Cottonwood, AZ

A: It sounds like you’ve got phragmites. Also known as “common reed,” certain invasive varieties of this plant have taken root on the East Coast, Midwest and Pacific Northwest – and, apparently, in your pond! To identify the species of phragmite in your pond, check out Cornell University’s “Morphological Differences” website here.

Phragmite 101

Generally speaking, phragmite is a perennial wetland grass that can grow to 6 to 15 feet in height. Its stems, which are erect, smooth and hollow, measure nearly 1 inch in diameter and are topped with 12-inch-long dense panicles, or purple-brown pyramid-shaped plumes of flowers, that emerge between July and September. The leaves that arise from the stem are 10 to 20 inches long and up to 2 inches wide.

The plants propagate mainly via an extensive network of underground rhizomes, or horizontal stems, that produce roots and shoots that grow as deep as 39 inches, with their root systems growing down another 3 feet. They’re hardy – and unfortunately, they can be tough to control.

A Substantial Threat

These invasive, non-native bad guys can do some serious damage to your lake or pond. Not only do they create tall, dense stands that crowd out native plants and animals, but they also block your shoreline views, create fire hazards from dry plant material, and reduce areas for swimming, fishing and hunting. They’re definitely not something you want on your property.

Treatment Options

Once phragmites has taken root in your lake or pond, you’ll need to develop a long-term management plan to control them. Unfortunately, because the plants spread through their rhizomes, they could be difficult to eradicate entirely. That’s where chemical and mechanical control can help.

  • Chemical control: First, you can spray an EPA-registered herbicide and surfactant product, like Kraken™ & Cide-Kick™ Combo, in the late summer or early fall. Mix the herbicide with 2 gallons of water, pour it into pond sprayer and spray on the plants with your Airmax® Pressurized Pond Sprayer, completely wetting the surface of the leaves. Allow the mixture to absorb into the plant and the root system – the most difficult part of the plant to kill – for two weeks.
  • Mechanical control: Once the herbicide has had a chance to soak into the phragmites’ root system and kill the plants, use a weed cutting and removal tool, like the Pond Logic® Pond Rake and Weed Cutter, to slice at the base of the plants and remove them. If you can control your pond’s or lake’s water line, you can also cut the phragmites 2 to 3 inches below the water surface to cut off the plant’s supply of oxygen and drown the plant.
  • Destroy what you’ve removed: To prevent the accidental spread of the plant, collect the cut material and bag it before disposing of it. In extreme cases, prescribed burning after herbicide treatment can provide additional control.

Before you begin, check with your local environmental agency to see if a permit is required for the treatments of these buggers. Plan to repeat this routine several years in a row. Patches may emerge even after regular treatments, but once you’ve wiped out the majority of the phragmites, the plant will be much easier to control. Just remember: early detection is key!

Pond Talk: How do you control phragmites in your lake or pond?

Kraken™ Aquatic Herbicide & Cide-Kick™ Combo - Eliminate Emergent Weeds

I’ve inherited an overgrown pond. How can I whip it back into shape? | Ponds & Lakes Q&A

I’ve inherited an overgrown pond. How can I whip it back into shape?

Q: I’ve inherited an overgrown pond. How can I whip it back into shape?

Kent – Maurice, LA

A: Congratulations! You just purchased your dream property with rolling fields, lush green trees and a gorgeous lake or pond – or at least that’s how you remembered it when you signed the loan documents.

But once you move in and take a closer look at the situation, you realize that gorgeous lake is an overgrown nightmare. Believe it or not, this is not an uncommon scenario. Many new land owners purchase property with a lake or a pond only to discover it hasn’t been well maintained.

Of course, you want to reclaim that overgrown pond and turn it into a useable recreation or livestock watering area, but where do you begin? Check out these six tips for whipping your lake back into shape.

1. Evaluate the Situation

Your first task is to evaluate the pond itself and record what you find. What is its size, shape and depth? Is there an abundance of weeds? Can you find an aeration system? Are there fish living in the pond? Jot down as many details as you can, because they will be important when deciding what kinds of product to use to regain control of your lake. The more you know, the better.

2. Install Aeration

Next, install an aeration system. Aeration, which circulates oxygen throughout the water column, will go a long way toward improving the health of your pond while you regain control of the habitat and work to maintain it. Plus, your fish and the natural bacteria living in the pond rely on the mechanical water turnover to replenish the oxygen supply and remove harmful gasses like ammonia.

3. Identify Weeds and Treat Them

What weeds are growing in your pond? To help you identify the greenery and determine whether they’re beneficial plants or nuisances, check out The Pond Guy® weed control guide. Once you have the plants ID’d, you can then select the proper chemicals and the right amount to handle the job. Start treating the weeds with a suitable algaecide or herbicide once your aeration system is well established.

4. Rake Out Dead Debris

Yes, it seems like a tough job, but you will need to rake out and remove dead debris, like fallen leaves, cattails and other decomposing organic materials with a weed cutter and rake, like the Pond Logic® Pond Rake and Weed Cutter. The hard work will pay off in the long run. The more large debris you remove, the less work your muck-destroying beneficial bacteria and aeration system will need to do – and the faster your pond will get back into tip-top shape.

5. Maintain, Maintain, Maintain

To keep your pond or lake on the fast track to being clean, clear and usable, you must keep up on the maintenance chores. Remove the years of pond muck buildup with natural bacteria or phosphate binder, like those found in Pond Logic® ClearPAC® PLUS pond care package. Continue to remove dead and decomposing debris as your herbicides kill nuisance weeds. Add pond dye for aesthetic appeal and to slow algae growth. Now that you have the overgrown pond under control, don’t let it get away from you!

6. Be Patient and Persistent

Despite your efforts, it will take time to reclaim your pond or lake – so be realistic about your expectations. Consider the pond’s age and the amount of debris it has accumulated over the years. If it took a decade or more for the pond to look it way it did, it will take more than one afternoon of hard work to make it pristine again! Be patient and persistent. You’ll have that gorgeous pond in no time.

Pond Talk: If you’ve purchased property with a pond or lake, what kind of condition was it in and what did you do to make it usable?

Airmax Aeration Systems - Reduce 90 Percent of Nutrients in 90 Days

Why can’t I treat my pond with the common weed killer I use around my yard? | Ponds & Lakes Q&A

Why can’t I treat my pond with the common weed killer I use around my yard?

Q: Why can’t I treat my pond with the common weed killer I use around my yard?

Duane – Spring Grove, PA

A: It may seem like a convenience and a cost savings to use your terrestrial weed herbicides to treat weeds in your pond or lake. But when it comes to managing nuisance growth in and around your pond, not all chemicals are created equally.

Though broad-spectrum-use herbicides like diuron work great on grassy terrestrial weeds, they’re not approved for use on cattails and water milfoil because of the direct contact with public waterways or possibility of leaching into drinking/ground water. Instead, you need to use products that are registered by the Environmental Protection Agency for aquatic use, like Pond Logic® Algae Defense®, PondWeed Defense® and Avocet® PLX aquatic herbicides.

Why the regulations? Read on for details.

Environmental Protection

The EPA registers products like herbicides for aquatic use to protect the environment. Its goal is to minimize harm while maximizing results.

The government agency tests the ingredients’ concentration, frequency of use and effectiveness for their short-term and long-term effects in their intended environment. It also checks the chemicals’ half life, which is how long the substances remain in the environment before breaking down enough to be considered non-toxic.

Safer for Your Pond Visitors

If you use unapproved chemicals in your pond or lake, you could be doing harm to not only the ecosystem but also to your fish, your livestock and wildlife, your soil and, most importantly, to yourself, your family and your neighbors.

Herbicides that have been approved by the EPA include specific restrictions and precautions on their labels about consuming fish after treating bodies of water. They caution against swimming in or drinking from treated ponds within a certain amount of time after application. They even warn of soil contamination issues that landowners or pond professionals should be aware of.

Chemicals that are not approved for aquatic use have none of these warnings because they have not been tested for their effects on the pond habitat. In fact, some products can actually be considered a contaminant to the aquatic environment – and you don’t want that, right?

Obey the EPA

Even if you don’t consume your game fish, swim in your lake or drink the water, you should steer clear of unapproved chemicals. Some of them can leach into the soil surrounding the pond or be released during heavy rains when ponds flood. That runoff – including the potentially toxic chemicals – can then be released into the public waterways or wetlands used by neighbors.

Play it safe. Obey the EPA.

Pond Talk: What do you think of the EPA’s regulation of aquatic herbicides?

Pond Logic PondWeed Defense - Eliminate Aquatic Weeds

What chemical should I use to treat water milfoil? | Ponds & Lakes Q&A

What chemical should I use to treat water milfoil?

Q: What chemical should I use to treat water milfoil?

Douglas – Goddard, KS

A: Before we dive into how to treat this aquatic invader, let’s get to know it a little better first.

Water milfoil, also known as Eurasian Water Milfoil (Myriophyllum spicatum), is a submersed aquatic plant that’s native to Europe, Asia and northern Africa. It has feather-like leaves that grow from white, red or brown stems, and some species produce four-petaled pink or reddish flowers that rise a few inches from the water’s surface.

Eurasian water milfoil thrives on fertile, fine-textured, inorganic sediments. An opportunistic species, the plant prefers water bodies that receive nitrogen and phosphorous-laden runoff, like a farm or agricultural pond. Growth explodes when water temperatures rise, which promote multiple periods of flowing and fragmentation (or when pieces of the plant grow roots and develop new plants).

If left unchecked, water milfoil can dominate a pond or lake in no time.

Controlling Growth

The good news is that you can find myriad products to manage this invasive species. The chemical you choose has to do with several factors.

Closed or open system? If your pond is mostly covered with water milfoil, does not have water flowing in and out, and is not used for irrigation, NovaSource™ WhiteCap® SC Aquatic Herbicide will be your best choice. The product uses the active ingredient fluridone, which effectively controls a wide range of floating, submerged and emergent aquatic vegetation including duckweed, hydrilla, bladderwort, naiad, elodea, water lily, coontail, pondweed and water milfoil – giving you more herbicide bang for your buck.

Small area or large? If you’re treating a smaller area of a pond or lake, Pond Logic® PondWeed Defense® Aquatic Herbicide works like a charm. It’s a rapid-acting contact herbicide that drops aquatic weeds below the water surface in four to seven days, though heavy growth may require a second application in 10 to 12 weeks.

Spray or granular? If you prefer granular herbicides to spray ones and have a smaller area to treat, choose Navigate. This granular herbicide is ideal for spot-treating weeds around docks, beach areas and shorelines, killing the roots of both submerged and floating plants, including water milfoil, coontail and water lilies. You’ll see it go to work within 10 days; you’ll see full effects in three to five weeks.

Plant, Human Considerations

When choosing a chemical herbicide, pay special attention to use restrictions. Some of these products have limitations for use in irrigation ponds, swimming holes and other situations until the chemical has adequately broken down in the water.

Also consider the other critters – plants, fish and animals – that live in your pond. Certain products can harm game fish, koi or goldfish, and can kill off prize water lilies and other welcome aquatic plants.

Pond Talk: How do you manage invasive plants in your pond or lake?

WhiteCap Fluridone Aquatic Herbicide - One Treatment Lasts All Season

Is there an easier way to get rid of weeds? I’m tired of pulling them by hand. | Ponds & Lakes Q&A

Is there an easier way to get rid of weeds? I’m tired of pulling them by hand.

Q: Is there an easier way to get rid of weeds? I’m tired of pulling them by hand.

Beverly – Richfield, WI

A: Who doesn’t love tools? They’re cool to look at, fun to play with – and, the best part, they help make chores easy. When it comes to maintaining your pond or lake, tools of all shapes and sizes will come in very handy, particularly these four must-haves, below.

Pond Rake

A pond rake pulls, gathers and removes dead debris from the surface or the bottom of a pond.

Debris on the surface of a pond, like algae or fallen leaves, can sink to the bottom and start to decay, adding to the muck and detritus that’s already there. All that debris degrades water quality, compromises fish health, provides a nutrient source for nuisance plants, and can even affect chemical treatments’ ability to work.

A floating/sub-surface pond rake, like the Pond Logic® Pond and Beach Rake, or a sub-surface pond rake, like the Jenlis Weed Raker™, lends a long helping hand. Elongated by rope so you can easily get the deep-water growth, both rakes work by removing submerged lake and pond weeds by their roots, slowing their spread.

Weed Cutter

A weed cutter, like the Pond Logic® Weed Cutter and the Jenlis WeedRazer®, mechanically slices through weeds at their stems so they can then be raked out.

The 28-inch, double-sided Pond Logic® Weed Cutter features a two-piece, rust-proof, powder-coated aluminum handle that’s 11 feet long. It’s great for removing floating aquatic vegetation, marginal weeds and cattails that extend past the pond’s edge.

The V-shaped Jenlis WeedRazer™ clears a 4-foot-wide path in pond weeds by sinking to the bottom and slicing through submerged weeds like watermilfoil, cattails and lily pads as you pull it across the pond. The razor-sharp tool weighs just 8 pounds, making it light enough to toss 30 feet or more yet heavy enough to sink straight to the bottom.

Sprayer

A sprayer makes pond chemical application easy. Most liquid chemicals are more effective when they’re sprayed over the target weed, and a tank sprayer, like an Airmax® Specialty Pressurized Pond Chemical Tank Sprayer, is designed just for this purpose. The 2.75-gallon pond tool features a wide-mouth fill top that minimizes accidental spills, a brass corrosive-resistant handle, and a high-pressure tank that allows you to spray hard-to-reach weeds.

Invest in a separate sprayer just for pond chemicals. If you use lawn and garden chemicals in the same sprayer that you use on your pond, doing so can be toxic to fish and other aquatic life as residue could be left behind. Keep your fish and pond plants healthy and happy: Use a different tool for the job.

Granular Spreader

The final must-have tool is a granular spreader, which helps you disperse granular herbicides evenly over your target area – and that means a more effective weed kill-off. The rust-proof Earthway® Granular Hand Spreader holds 10 pounds of material in a large hopper and features an application adjuster that lets you control how much product is released with its smooth-action hand crank.

Pond Talk: If you could only have one pond-care tool in your toolbox, what would it be? Why?

Pond Logic Pond & Beach Rake - Remove Weeds & Muck Build Up

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