Hello @JonBee
Thank you for sharing your question about removing onion weed from your buffalo lawn.
Unfortunately, there aren’t any selective sprays that can target onion weed without also harming your grass. A good alternative is to use a weeding wand applicator to carefully apply weed killer directly to the tips of the onion weed. This method helps avoid any overspray onto your lawn. Another option is Yates 200ml Zero Rapid Gel 1 Hour Action Weed Killer, although if you have a large area to cover, it could be a bit tough on your back with all the bending.
You might find it helpful to check out our Best Advice article on "How do you get rid of onion weed." There are also many previous discussions with helpful tips from our community members that could offer additional solutions.
If you need further assistance, please let us know.
Eric
