HogversityExercise 4Fixed shooter, rules of 1978

Umbel Invaders

Spray the stem and the plant dies. Spray the head and it grows back with two.

Controls

  • Keyboard: ← → to move, Space to spray, P to pause.
  • Touch: put a finger on the field and drag; the sprayer follows and sprays by itself.

Field notes

  • Cutting off a flower head does not kill the plant: the side buds grow out and bear several smaller heads instead (see Hydra effect). Only the root, or here the stem, is final.
  • Seed that reaches the ground joins the seed bank, and the bank sends up new plants long after the old ones are gone.
  • Real work parties do not use spray bottles, and nobody should face a stand of hogweed without protective clothing.