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4.2
(214)
4.2 out of 5 stars. 214 reviews
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Shop all Applied Biochemists

Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.

4.2

(214 Reviews)

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Item # 420183699

$89.99

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Was$99.99

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  9. Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.

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Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.

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Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.

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Applied Biochemists Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.
Applied Biochemists Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.
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Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.
4.2(214)

Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.

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Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.

Item # 420183699

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Applied Biochemists Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.
Applied Biochemists Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.

$89.99

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Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.
4.2(214)

Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment, 1 gal.

$89

.99

$99.99

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Applied Biochemists Cutrine-Plus Algaecide Pond Treatment, 1 gal.
4.1(103)

Applied Biochemists Cutrine-Plus Algaecide Pond Treatment, 1 gal.

$74

.99

Applied Biochemists Aquashade Aquatic Plant Growth Control, 1 gal.
4.6(62)

Applied Biochemists Aquashade Aquatic Plant Growth Control, 1 gal.

$54

.99

$64.99

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Crystal Blue Copper Sulfate Crystals Pond Treatment, 15 lb.
4.6(368)

Crystal Blue Copper Sulfate Crystals Pond Treatment, 15 lb.

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The Applied Biochemists Weedtrine D Aquatic Herbicide Pond Treatment is a broad range aquatic weed control product that kills underwater, floating and shoreline weeds. When using on plants above the water, use with an aquatic use non-ionic surfactant. The pond treatment comes ready-to-use for convenience.

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

  • Apply early in the day when water temperatures are at least 60 deg. F
  • Treat when growth first appears
  • When fish are present, treat in small sections to avoid oxygen depletion from decaying vegetation consuming too much oxygen at once
  • For best results on tough-to-kill aquatic weeds, tank mix with Cutrine Plus Algaecide
  • Easy dilute and spray application
  • Fast results on a broad range of under water weeds
  • Water use is restricted for irrigation, drinking (animal or human) and swimming; see product label for details
  • Surfactant is necessary when using this product with any weed on or above the water surface
BrandApplied Biochemists
Country of OriginMade in USA
Active IngredientsDiquat Dibromide
Concentrated or Ready to UseReady to Use
FormLiquid
Longevity1 week
Maximum Pond Size20 ac
Maximum Recommended Pond Depth20 ft.
OrganicNo
Package Quantity1
Package Size1 gal.
Product Height12.1 in.
Product Length6.2 in.
Product Weight9.5 lb.
Product Width4.75 in.
Treatment TypeHerbicides
Manufacturer Part Number390304A

Have a question?
Start typing your question and we'll check if it was already asked and answered.
1 - 10 of 45 Questions
Sort by
Newest questions

Q: Will this product kill cattails?

9 days ago
1 Answer
  • AI-generated, Human-approved
    A: Yes, this herbicide is effective for controlling cattails. Reviewers have noted that it can kill cattails in as little as three days, though it is recommended to use an aquatic non-ionic surfactant when treating plants on or above the water surface.
    7 days ago
    Helpful?

Q: Is it safe for koi

15 days ago
1 Answer
  • AI-generated, Human-approved
    A: Yes, Weedtrine-D is generally considered safe for koi and other pond fish when used according to the label directions. To protect aquatic life, it is important to treat heavy vegetation in small sections to avoid oxygen depletion caused by decaying plants.
    14 days ago
    Helpful?

Q: Surfactant needed and what kind

25 days ago
1 Answer
  • AI-generated, Human-approved
    A: Yes, a surfactant is necessary when using this product on weeds located on or above the water surface. You should use an aquatic-use non-ionic surfactant to ensure the treatment stays on the plants for effective results.
    21 days ago
    Helpful?

Q: Does Weedtrine D require something like AB Brand Adjuvant or FarmWorks 1 gal. 80/20 Surfactant Spray Aid?

a month ago
2 Answers
  • A: Weedtrine d can work with any other surfactant as long as is it non-Ionic
    a month ago
    Helpful?

Q: Will it kill turtles or fish?

2 months ago
1 Answer
  • A: Thank you for your question. When used according to label directions, this aquatic herbicide is designed to control weeds and algae and is not intended to harm fish or turtles. However, treating heavy vegetation all at once can temporarily affect oxygen levels in the water, so it is important to follow application guidelines carefully to protect aquatic life.
    a month ago
    Helpful?

Q: What is the percentage of the chemical Diquat that's in it?

2 months ago
1 Answer
  • A: Thank you for your question. It contains 8.53% diquat dibromide.
    a month ago
    Helpful?

Q: Does this kill Lilly pads

2 months ago
1 Answer
  • A: yes, it will kill any growth you spary
    2 months ago
    Helpful?

Q: How do I use this

2 months ago
1 Answer
  • A: Hi, we recommend following the labeled instructions for best usage practices. It comes with a detailed, booklet-style instruction manual attached directly to the back of the jug.
    2 months ago
    Helpful?

Q: Will this product kill the red algae taking over my pond?

2 months ago
1 Answer
  • AI-generated, Human-approved
    A: Yes, this product can kill algae, though it is primarily designed for aquatic weeds. For the best results on tough vegetation or algae, it is recommended to tank mix this herbicide with Cutrine Plus Algaecide.
    2 months ago
    Helpful?

Q: Will this be safe for my dog to swim in also he drinks some of the lake water now n then

3 months ago
1 Answer
  • A: Susan, there is no restriction on swimming after a treatment; however, there is a 1-3 day drinking restriction depending on how much product was applied. I would recommend reviewing that part of the label and keep your dog out of the water for the indicated time.
    3 months ago
    Helpful?
1 - 10 of 45 Questions
  • Next

Q&As

Have a question?
Start typing your question and we'll check if it was already asked and answered.
1 - 10 of 45 Questions
Sort by
Newest questions

Q: Will this product kill cattails?

9 days ago
1 Answer
  • AI-generated, Human-approved
    A: Yes, this herbicide is effective for controlling cattails. Reviewers have noted that it can kill cattails in as little as three days, though it is recommended to use an aquatic non-ionic surfactant when treating plants on or above the water surface.
    7 days ago
    Helpful?

Q: Is it safe for koi

15 days ago
1 Answer
  • AI-generated, Human-approved
    A: Yes, Weedtrine-D is generally considered safe for koi and other pond fish when used according to the label directions. To protect aquatic life, it is important to treat heavy vegetation in small sections to avoid oxygen depletion caused by decaying plants.
    14 days ago
    Helpful?

Q: Surfactant needed and what kind

25 days ago
1 Answer
  • AI-generated, Human-approved
    A: Yes, a surfactant is necessary when using this product on weeds located on or above the water surface. You should use an aquatic-use non-ionic surfactant to ensure the treatment stays on the plants for effective results.
    21 days ago
    Helpful?

Q: Does Weedtrine D require something like AB Brand Adjuvant or FarmWorks 1 gal. 80/20 Surfactant Spray Aid?

a month ago
2 Answers
  • A: Weedtrine d can work with any other surfactant as long as is it non-Ionic
    a month ago
    Helpful?

Q: Will it kill turtles or fish?

2 months ago
1 Answer
  • A: Thank you for your question. When used according to label directions, this aquatic herbicide is designed to control weeds and algae and is not intended to harm fish or turtles. However, treating heavy vegetation all at once can temporarily affect oxygen levels in the water, so it is important to follow application guidelines carefully to protect aquatic life.
    a month ago
    Helpful?

Q: What is the percentage of the chemical Diquat that's in it?

2 months ago
1 Answer
  • A: Thank you for your question. It contains 8.53% diquat dibromide.
    a month ago
    Helpful?

Q: Does this kill Lilly pads

2 months ago
1 Answer
  • A: yes, it will kill any growth you spary
    2 months ago
    Helpful?

Q: How do I use this

2 months ago
1 Answer
  • A: Hi, we recommend following the labeled instructions for best usage practices. It comes with a detailed, booklet-style instruction manual attached directly to the back of the jug.
    2 months ago
    Helpful?

Q: Will this product kill the red algae taking over my pond?

2 months ago
1 Answer
  • AI-generated, Human-approved
    A: Yes, this product can kill algae, though it is primarily designed for aquatic weeds. For the best results on tough vegetation or algae, it is recommended to tank mix this herbicide with Cutrine Plus Algaecide.
    2 months ago
    Helpful?

Q: Will this be safe for my dog to swim in also he drinks some of the lake water now n then

3 months ago
1 Answer
  • A: Susan, there is no restriction on swimming after a treatment; however, there is a 1-3 day drinking restriction depending on how much product was applied. I would recommend reviewing that part of the label and keep your dog out of the water for the indicated time.
    3 months ago
    Helpful?
1 - 10 of 45 Questions
  • Next

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Reviews

Rating Snapshot

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5 starsstars

133
133 reviews with 5 stars.

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36 reviews with 4 stars.

3 starsstars

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16 reviews with 3 stars.

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11 reviews with 2 stars.

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18 reviews with 1 star.

Overall Rating

4.2
59 out of 72 (82%) reviewers recommend this product

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Most Helpful Favorable Review

5 out of 5 stars.

Excellent Results when properly applied

10 years ago
My first application failed due to not following instructions! After adding surfacant (keeps the weedtrine on the surface) it has worked well in several other ponds for duck and meal weed removal. Highly recommend the product. I used a motor driven pump to create a fine spray on to the ponds.
8 people found this helpful
Show Reviews:

Most Helpful Critical Review

1 out of 5 stars.

not very effective

14 years ago
Wild ducks left me with a pond full of duck weed.I have used this product twice this year and I still have a pond full of duck weed.It would kill off maybe 1/4 in week to 10 days and this stuff replace's its self in 2 to three weeks, so lots of money for nothing.Don't know what to use any more.
16 people found this helpful
Show Reviews:
  • weeds
  • purchase
  • for weeding
  • results
  • functional
  • quality
  • price
  • instructions
1 to 4 of 214 Reviews .
1 – 4 of 214 Reviews
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Most Recent
Ohio
Reviews 2
5 out of 5 stars.

Worked on stubborn niasid weeds along the edges

a year ago
Worked well after second application, I added the algecide with it. Took a good week to die. But worked. It was gentle enough for me to use as we have our pond lined with a liner. I have never had underwater weeds before.
SweepstakesYes

Yes, I recommend this product.

Reviews 5
5 out of 5 stars.

Pond shore control

a year ago
Quality product that works as advertised
SweepstakesYes

Yes, I recommend this product.

Response from SePro team:
a year ago
SePro team
Glad to hear you had good experience. Thank you for the positive feedback!
Eudora Kansas
Review 1
5 out of 5 stars.

It worked great

2 years ago
It took about a day after applying to kill on the weeds and duckweed in my lagoon.
SweepstakesYes

Yes, I recommend this product.

Response from SePro team:
a year ago
SePro team
Thanks for the positive feedback! Glad to hear you got the results you needed.
Stateline pa
Review 1
1 out of 5 stars.

Not worth the money.

2 years ago
Poured chemical on lily pads only burnt tops not roots they all came back in a week.
SweepstakesYes

No, I do not recommend this product.

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