I have alot of beds with juniper and jasmine with weeds in them. I went to lesco and got fuselade for the grassy weeds, and they gave me image for the broadleaf weeds. Is this the best way to do it? Also, can they be mixed and sprayed at once? And if so, say you need a ounce of fuselade per gallon of water, and the same for image. If you put an ounce of image and an ounce of fuselade in the sprayer would you then use one gallon of water or 2?