iNaturalist is another good option for plant identification (and other forms of life as well). It has decent machine learning for suggesting IDs and is also backed by its community providing IDs. I've been using it a lot this year and have found it pretty helpful for IDs (though some regions and life forms are more likely to have good identifications than others), as well as for showing me what people are seeing in the area, and feeling like I'm contributing useful data.