Iron HEDTA

Iron HEDTA (hydroxyethyl ethylenediaminetriacetic acid iron chelate) is a widely used active ingredient functioning as a selective, contact-based post-emergence herbicide. Unlike conventional chemical herbicides, Fe-HEDTA provides an effective solution for controlling broadleaf weeds and moss without causing permanent damage to desirable lawn turf, making it a preferred choice for eco-conscious turf management.

The mode of action of Iron HEDTA relies on the plant's inability to regulate the absorption of iron ions. When applied to the leaves of sensitive weeds, the chelated iron is absorbed in excess, leading to rapid oxidative stress and cell necrosis. The plant tissues dehydrate and blacken shortly after application, effectively halting growth and leading to the eventual death of the unwanted organism.

In practice, Iron HEDTA is predominantly utilized in the maintenance of golf courses, residential lawns, and public parks. It is specifically targeted against various moss species and common broadleaf weeds like clover and dandelion. Because the iron is chelated, it remains bioavailable to the grass blades, providing a secondary benefit of greening the turf as it performs its herbicidal function.

Successful application of Fe-HEDTA requires careful attention to environmental conditions and dosage rates. It is most effective when applied during dry weather to ensure the solution stays on the leaves long enough to be absorbed. Users should be aware that excessive application rates can lead to temporary darkening of the lawn, which typically resolves as the grass continues to grow.

Safety precautions include the use of personal protective equipment, such as gloves and protective eyewear, during mixing and application. Care should be taken to avoid overspray on hard surfaces like concrete, stone, or painted structures, as the iron content can cause permanent brownish-red staining. Equipment should be thoroughly rinsed after use to maintain the integrity of spraying components.

• Highly effective for moss and weed suppression.
• No soil residual activity or environmental accumulation.
• Rapid visual results within hours of application.
• Dual function as a weed killer and turf nutrient.