Clearcast

SePRO · Equivalent to 11.4% · EPA Reg 241-437-67690 · Herbicide ✓ Last verified 2026-05-30

Free practice questions on this product's label, use, and safety.

Key facts From the EPA

Registration, signal word, restricted-use status and approved use sites are sourced from the U.S. EPA pesticide registry. EPA Reg. No. 241-437-67690. EPA pesticide labels ↗

Active ingredient Equivalent to 11.4%

Manufacturer SePRO

EPA registration 241-437-67690

Category Herbicide

Target pests Vegetation

Safety & handling WARNING; H361: Suspected of damaging fertility or the unborn child; H400: Very toxic to aquatic life; H410: Very toxic to aquatic life with long lasting effects

According to the label From the product label

These application details were read from this product's label by our system to help you in the field. The label is the law — always confirm rates, sites and restrictions against the actual product label before mixing or applying. View the full label →

Clearcast is a herbicide designed for the control of vegetation in aquatic and non-crop areas. Its active ingredient is imazamox (as ammonium salt of 2,4-[(4-methyl-6-oxo-1H-pyridazin-3-yl)amino]-6-methylpyridine-3-carboxylic acid) at a concentration of 12.1%. It is used to control a wide variety of emergent, floating, and shoreline species, including grasses, sedges, and certain broadleaf plants. The product can be applied via broadcast spray, foliar application, injection (hawk and squirt), or as a basal treatment. It is suitable for use in both indoor (managed water bodies) and outdoor aquatic environments. Application methods include ground application using spray equipment or aerial application via fixed-wing aircraft or helicopter. Users should note that imazamox is highly effective but requires careful management of application rates to avoid exceeding environmental limits. Handling requires specific PPE, including long-sleeved shirts, long pants, chemical-resistant gloves, and protective eyewear. Always follow specific instructions for mixing and dilution to ensure efficacy and minimize environmental impact.

Application rates & sites 4

Target pest	Indoor / Outdoor	Where on site	Rate	Notes
Emergent, Floating, and Shoreline Species (e.g., Alligatorweed, Common Reed, Water Hyacinth, etc.)	Outdoor	Aquatic environments, non-crop areas, ditches, and canals	Variable (see tables) fl oz/A	Can be applied via broadcast spray, foliar application, injection, or basal treatment.
Susceptible Aquatic Plants (50 to 200 ppb)	Outdoor	Water bodies	50-200 ppb	Includes species like Curlyleaf pondweed and Eurasian watermilfoil.
Moderately Susceptible Aquatic Plants (100 to 300 ppb)	Outdoor	Water bodies	100-300 ppb	Includes species like American pondweed and Bladderwort.
Less Susceptible Aquatic Plants (200 to 500 ppb)	Outdoor	Water bodies	200-500 ppb	Includes species like Bulrush and Cattail.

Mixing & dilution 1

For	Where	Amount	Per	Finished strength	Notes
General aquatic vegetation					May require use of spray adjuvants like nonionic surfactants or methylated oils depending on target species.

PPE required Long-sleeved shirt and long pants; Chemical-resistant gloves (barrier laminate, butyl rubber ≥14 mils, nitrile rubber ≥14 mils, neoprene rubber ≥14 mils, or polyethylene/polyvinyl chloride); Shoes plus socks; Protective eyewear.

Timing & weather

Avoid application during temperature inversions.
Do not apply if wind speed is greater than 10 mph.
Avoid application in low relative humidity to prevent large droplet drift.

Use restrictions 7

DO NOT apply to plants outside the treated area.
DO NOT contaminate water with more than 500 ppb active ingredient.
DO NOT exceed 1 gallon of Clearcast per acre for broadcast spray.
DO NOT apply in wind speeds greater than 10 mph.
DO NOT apply during temperature inversions.
DO NOT use to irrigate greenhouses, nurseries, or hydroponics.
DO NOT plant sugars, onions, potatoes, or other sensitive crops in treated soil.

Documents

📄 Label 📋 SDS 🇪🇸 Spanish Label

Additional documents (2)

📎 Spanish — Clearcast label spanish 📎 Spanish — Clearcast label spanish

Label SDS

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Versions 2026-05-30 2026-05-30 2026-05-30 2026-05-27 · default 2026-05-27

Label text

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Reference only. Always read and follow the most current EPA-approved label on the product container. State and local restrictions may apply that are not reflected in this digitised copy. Verify the EPA registration number and revision date before use.