I find that my homemade Bonsai Weeding+Cleaning Tool is very effective at plucking weeds and removing moss and lichen. Use the pointed end to plunge into the base of a weed like using a garden spade and then use your forefinger or thumb to capture the weed to tug it out of the soil or root base. The tool is also very useful to clean crevices in bonsai pots and tamp soil. It is made from 3/8″ PEX plastic pipe that can be purchased for under $7 from a big box store. The pipe is sold in 10 foot lengths. Use a sharp utility knife to cut a sharp angle. To resharpen, just cut a fresh edge. Make a bunch for your fellow bonsai club members!