By Scout Nelson
Organic herbicides are becoming more popular as people look for safer lawn care options. Graig Reicks, SDSU Extension Weed Ecology Field Specialist, along with Eric Jones, Nick Volesky, and Philip Rozeboom, highlight how these products are often seen as better for humans, pets, and the environment, but they require careful use and planning.
One important factor is product selection. Many organic herbicides are non-selective, which means they can harm both weeds and grass. It is important to choose products labeled as selective, so they target weeds without damaging lawns.
Effectiveness is another key concern. Organic herbicides, such as those containing iron HEDTA, act as contact herbicides. They only kill the parts of the plant they touch and do not move inside the plant. Because of this, perennial weeds like dandelions and white clover often regrow from their roots. Multiple applications are usually needed to achieve results similar to chemical herbicides that move through the plant and destroy the roots.
Organic herbicides may work better on annual weeds. These weeds depend mainly on their above-ground growth, so removing the foliage can stop them completely. However, repeated applications are still needed for the best results.
Cost is also an important consideration. Organic herbicides are more expensive than chemical options, especially for large areas. Treating an entire lawn can require several applications each year. For smaller infestations, spot spraying can be a practical and cost-effective option.
Other methods can support weed control. Hand removal can be effective if most of the root is removed. Maintaining a healthy lawn through proper mowing height, watering, and balanced fertilization also helps reduce weed growth.
Some plants, such as clover and dandelions, can support pollinators and improve soil health. Organic herbicides can be useful tools, but they work best when combined with good lawn care practices and regular monitoring.
Photo Credit: gettyimages-johnbraid
Categories: South Dakota, General