Grass Out Max (Clethodim Herbicide) would injure the moss. We would recommend using Ferti-lome Over the Top II Weed Killer to kill grassy weeds in and around moss. The product label lists different varieties of moss that are tolerant, please view the product label HERE.
Since the product label does not indicate a time frame on when Grass Out Max (Clethodim Herbicide) can be applied to newly planted clover, we would recommend contacting the manufacturer directly for confirmation. Agrisel can be reached at (770) 831-4160.
Grass Out Max is a grass killer and would likely kill the bermuda in approved areas on the label. You would use a surfactant with this product.
Grass Out Max is a grass killer and would likely kill the bermuda and monkey grass.
According to the product label you will want to use between 12-24 oz of Grass Out Max per acre. Please see the label for complete application instructions.
GrassOut Max is not for use on turfgrass so should not be applied to lawns. For areas listed on the label if mowing is needed you may do so 2 days after application or 2 days before application.
Grass Out Max (Clethodim Herbicide) is not labeled to be used on or around sweet corn. Alligare 2,4-D Amine Herbicide is labeled to treat broadleaf weeds in and around sweet corn however the corn cannot harvest for 45 days after application
Please view the product label for more information. We also recommended consulting with your Local Department of Agriculture for their recommendations on herbicides to control weeds around sweet corn.
Grass Out Max (Clethodim Herbicide) is not specifically labeled for Miscanthus (aka Silver grass). You may try testing a small, inconspicuous area first to see the results, or you may reach out to the manufacturer (Agrisel) directly at (770) 831-4160 for more information.
Grass Out Max (Clethodim Herbicide) is used to remove all grasses from places like ornamental/flower beds and vegetable gardens if used as directed. Sweet potatoes are on label. Please make sure to refer to product label prior to application
Grass Out Max (Clethodim Herbicide) is only a grass killer and is labeled safe to be used on broadleaf crops listed on the product label with no injury. Will Not kill Flowers, Shrubs, Broad-leaf Crops or other Broad-leaf Plants
Grass Out Max (Clethodim Herbicide) is labeled to be used on Asparagus fern and many other ornamentals, ornamental trees, shrubs and broadleaf plants. We would suggest doing a small spot test to ensure a broadcast application would not harm your ferns.
View the full list of tolerant plants on the product label HERE.
Grass Out Max in theory would likely harm St Augustine grass since it targets similar grasses such as bermuda. However if the herbicide is not listing it as a control plant, then we couldn't say that it would actually be effective.
Grass Out Max (Clethodim Herbicide) is labeled to kill bermudagrass and safe to be used around liriope and lantana. It lists wirestem muhly as tolerant but not pink muhly, breeze grass or butterfly bush.
We would recommend contacting the Master Gardener with the Cooperative Extension office for recommendations for treating around those ornamentals.
Another option will be to spot treat with a non selective such as RoundUp QuickPro carefully spring the weed directly. This will not leach into the soil near desirable plants if applied carefully.
Yes, Grass Out Max (Clethodim Herbicide) can be applied over ornamental plants in nurseries to control crabgrass and other grassy weeds but will not control broadleaf weeds.
Please refer to the Directions for Ornamentals Section on page 62 of the product label for more information.
We do apologize if any misinformation you may have read in past Q&A’s by one of our staff regarding the use of Grass Out Max around bamboo. Due to labeling changes, revisions, updates, etc by manufacturers, it is always recommended that customers review the full product label prior to treating and observing all restrictions, limitations and directions per the product label being they are the end user and applying the pestiicide.
For Ornamentals (page 62) The product label provides a full list of the plants tested for use with Grass Out Max and does advise the following precaution “Due to variability within species, crop growth stage, environmental conditions, and application techniques, it is advised that the user determine if herbicide can be used safely on a few plants prior to widespread application. Neither the seller nor the manufacturer of AGRISEL GRASSOUT MAX HERBICIDE have investigated the safety factor to ornamental plants not listed on the label.”
Another mention is located on page 52 in Restrictive Labeling Section “Avoid contact with foliage, green stems, or fruit crops, or any desirable plants and trees, other than soybean with the Roundup Ready gene as severe injury or destruction will result."
Grass Out Max (Clethodim Herbicide) can be used to kill actively growing bermudagrass in ornamental beds however would not be used for turf applications. This product is only a post emergent and does not have any pre emergent qualities to prevent bermudagrass from germinating.
Depending on the type of turfgrass you will be reseeding with, you can kill the bermudagrass with a non selective like Roundup QuickPro and then reseed after 2 weeks. If you are reseeding with a cool season turfgrass such as Tall Fescue, Kentucky Bluegrass, Ryegrass – Tenacity Herbicde can be applied for pre emergent control of weeds at the same time as seeding. View the Tenacity product label for more information.
When using Grass Out Max (Clethodim Herbicide) label states that it will be most effective if applied at higher than 47 degrees but not exceeding 80 degrees or crop injury may occur. Best to apply during the day so the application has enough time to dry before night fall.
After using Grass Out Max you can triple rinse the sprayer or use a spray tank cleaner to ensure no residual is left.
Grass Out Max (Clethodim Herbicide) will likely kill your grass since it is only safe for ornamentals not for use on turfgrass areas. Image Kills Nutsedge Concentrate & Certainty Herbicide are both labeled to control poa while being safe on Zoysia lawns
Grass Out Max (Clethodim Herbicide) is designed specifically for killing grassy weeds including fescue in ornamental areas without harming desirable shrubs and roses, it is not for use in lawns at all.
Since poa annua is so closely related to cool seasons grasses, like fescue and ryegrass, there are not any herbicides that can be applied to kill the poa without also harming the fescue and ryegrass. We do have one product called Prograss EC Herbicide, but it is very expensive. We recommend spot treating the poa annua with a glyphosate product and then just reseeding those areas.
Unfortunately, we do not carry any herbicides that are labeled to kill zoysia in a tall fescue lawn. You will either need to spot-treat the unwanted grasses with a glyphosate product like Roundup Quik Pro and reseed. Fusilade II can be used to get rid of Bermuda grass in tall fescue. You will also need to add a nonionic surfactant for best results. Please be advised that Bermuda grass is extremely difficult to control and you will likely need to make several applications. With Fusilade II Herbicide, it is recommended to apply the product in the early morning hours or late evening hours when the temperatures are below 85 degrees Fahrenheit.
