Unfortunately, there are few options for post emergent control of Toothed Spurge and even using a non selective such as glyphosate at the highest rates have shown to be ineffective. The only product we can recommend would be Dismiss South Herbicide as it lists annual spurge (toothed spurge) as well as the other two common varieties, prostrate and spotted spurge. Repeat applications may be required and full control is not guaranteed.
One of the most common ways to deal with this weed in your gardens is to mulch the infested area, which prevents light from reaching their seedlings and seeds, depriving them of food before they can make it for themselves. Applying mulch that is 3 to 4 inches deep is typically affective.
Contact your Master Gardener with the Cooperative Extension Office for recommendations shown to be effective for this weed in your region.
Monterey Spurge Power does not list seashore paspalum on the label as a tolerable species.
Monterey Spurge Power can be used on Centipede and St. Augustine turfgrasses only if the established turfgrass have shown they can tolerate injury.
Per the product label, when treating Carpetgrass and St. Augustine turfgrasses, applciations should be made as a spot treatment only. Broadcast applications should be avoided when air temperatures are above 80 degrees to prevent injury to the lawn.
Monterey Spurge Power is used only as directed to turf lawns. Per the Monterey Spurge Power label: Avoid drift of spray mist to vegetables, flowers, ornamental plants, shrubs, trees and other desirable plants. It could injure iris if contact is made but not completely kill it.
If you are looking to get rid of wild Iris, we recommend Quali-Pro MSM Turf Herbicide on listed turfs.
The usage rates for Quali-Pro MSM Turf Herbicide will vary depending on what type(s) of weeds you are treating for, what type of grass you have, whether you will be spot treating or broadcast spraying, and how much area you need to cover. Please refer to the product label for complete application instructions.
How much the pint covers depends on the diluation rate used which varies depending on target pest and turfgrass tpe. You will use 1-1.25 oz. of Monterey Spurge Power per 2-5 gallons of water per 1,000 sq. ft. Please see the product label for complete application instructions.
No, Monterey Spurge Power does not control crabgrass or other grassy weeds. Our most popular choice for crabgrass control in most turfgrasses is Drive XLR8 Herbicide with Duo Stick surfactant. We have more tips in our online Crabgrass Lawn Care Guide here.
When treating warm season lawn that is completely dormant, the higher rates may be used. When treating warm season lawn that is actively growing, use a lower rate. Avoid applications to warm season lawn during transition from dormancy to green-up or green-up to dormancy.
Apply Monterey Spurge Power at the rate of 1.0 to 1.25 fl. oz. in 2 gallons to 5 gallons of water per 1,000 sq. ft. to control weeds growing in lawn planted to Bluegrass, Fescue, Rye, Bent (excluding golf greens and tees), Bahia, Bermuda, and Zoysia. The actual amount of water you use does not matter, as water is only the carrier. To simplify this, you can use 1.0-1.25 fl oz of Sporge Power in 5 gallons of water to cover 1,000 sq ft.
Monterey Spurge Power is a post-emergence herbicide that can be applied anytime creeping charlie (ground ivy) is actively growing. You can contact your Local Cooperative Extension Office for specific timing in your region.
