In an unmowed location, spotted spurge develops a more erect plant than prostrate spurge. Also, seedlings of the spotted spurge have a pink or green stem. Like most broadleaved weeds, spurge is most susceptible to postemerge herbicides when plants are in the seedling or immature stage. Mature plants are quite tolerant to most herbicides. Spurge begins to germinate in late spring and continues to emerge throughout the summer.
Controls are most effective when applied in early summer.
A second application may be required 4 to 6 weeks after the initial application to control new seedlings. Products such as dicamba and Trimec provide good control of immature spurge plants, but only fair control of mature plants. These products can be used on most turfgrasses. In bermudagrass turf, MSMA can be used for postemerge control of spurge. Dacthal, pendimethalin and Surflan have provided good preemerge control of spurge in warm season turfgrasses.