Iris blooming at Taddiken Farm |
According to Extention Horticulture Agent David Coletrain, there are two major weed killer types that are used to kill grassy weeds in broadleaf plants. The herbicides "Poast" and Fusilade II" can help gardeners who don't have the time or inclination for hand weeding. These products are specific for controlling grasses. All broadleaves are not affected. This means that the applicator can spray the top of perennial beds and control grass problems.
Fusilade is often sold under the names of "Grass-B-Gon," and "Grass-No-More-Over the Top Spray" and "Over the Top Grass Killer". Poast is commonly sold as "Hi-Yield Gras Killer" and Monterey Grass Getter".
The above info is from a newsletter called River Valley Green Thumb Guidelines. It may be found at http://www.rivervalley.ksu.edu/