Dandelions are definitely ugly. The problem is that they're weeds: they will grow with abandon and fill up every single possible spot on your lawn, crowding each other out in their rabid attempts to get some delicious sun. Mow them down and you're just acting as an evolutionary selection filter for short, creeping dandelions instead. It only takes a month or two of mowing to end up with a totally different, fully adapted short dandelion population. Leave your lawn fallow for a few months and you'll instead get 6ft tall monsters.
The infection needs to be removed and defended. Entire neighbourhoods need to work together on this; one lazy house is enough to poison the block.
The infection needs to be removed and defended. Entire neighbourhoods need to work together on this; one lazy house is enough to poison the block.