You're correct, Baja. Those measurements must be off on Amazon.Is that where you got yours? It says:
Product Dimensions: 4.7 x 2.2 x 0.4 inches
Shipping Weight: 4 ounces
Thijs, that is what I've been doing for years. Just pulling what I can, but the areas or pots never look really nice since I can't get it all. Right now I'm looking out at my Ocotillo that will be blooming and leafing out this month, and it has tall grass growing up the center of it. :(
Daisy, I'd never imagined that Round Up could be used on or around cactus! I have a large area of Agave Victoria-Reginae that is full of grass. Maybe I'll try that on a small section of it. My large plants have many pups in the middle of all the grass.