Postemergent herbicides can limit growth of green kyllinga. For commercial applicators, best control has been obtained when halosulfuron has been applied in two applications spaced about 2 weeks apart. Bentazon has reduced green kyllinga growth when two applications were made about 2 weeks apart. Both MSMA and bentazon can be applied only by licensed pesticide applicators. There are few options for the control of green kyllinga in ornamental plantings.
Prevention is very important.
Cultivation or hand-hoeing, although possible under some circumstances, is generally not useful and may be detrimental. This is particularly true if irrigation follows hoeing. Geotextile mulches combined with hand-removal should provide adequate control in home gardens. Wood chips or bark may be placed on top. Organic mulches alone may not effectively control kyllinga because it will probably grow through the mulch.