Herbicides are plant protection products designed to suppress or eliminate unwanted vegetation by disrupting essential physiological or biochemical processes in target weeds. In ornamental horticulture, they are primarily used as pre‑emergent treatments, forming a protective layer in the growing media that inhibits germination and early root or shoot development of both broadleaf and grassy weeds. When correctly applied, modern formulations provide long‑lasting residual control, supporting cleaner production environments, reducing manual weeding pressure, and safeguarding crop quality without impacting desirable species.
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Calculators to improve nutrient management and boost productivity
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Safe and effective pre-emergent control of broadleaf and grass weeds.
Long known as the “workhorse” of the nursery industry—OH2 is a unique combination of two proven active ingredients oxyfluorfen and pendimethalin. Ideal for use on container-grown ornamental trees and shrubs, contained garden beds and pots and field-grown ornamental plants.
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Pre-emergent weed control for up to six months.
Sierraron 4G is an extra resource for weed control to be used in conjunction with current weed management systems.
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