Least Favorite Plant: Bidens
...ack jack, burr marigolds, cobbler’s pegs, Spanish needles, stickseeds, tickseeds and tickseed sunflowers.” Those popular names should give some clues as to the plant’s behavior. Brush up against it and this happens: It turns out that nature has brilliantly designed these seeds to hitch a ride on mammals. Just touch or lightly brush up against the seed pods, which resemble mid-century chandeliers, and you’ll be picking out seeds for the next hour....