There's a reason it is number 1

It's definitely a full-on Boss instead of a mini boss, it's an incredibly aggressive plant originally from Japan that nothing wants to eat here on the continent. Think bamboo meets dandelion.

Goats do not like it because of how bitter it is.

It attracts monarchs who lay their eggs and caterpillars on it eat it and die :(

It spreads aggressively through shoots and runners, under asphalt and concrete.

You better be sure to pull the entire root because it can regenerate from a small piece.

It flowers within weeks with dozens of flowers per vine, and each flower produces a seed pod with half a dozen seeds that are on dandelion-like structures so they get spread far and wide.

You cannot compost it or put it in yard waste pickups because it will happily sprout out of these mediums.

Most herbicides are ineffective, and it shrugs them off.

Mechanical control is the most effective method of removal, but mowing it is just teasing it.

Ask me how I know.