Rangeland Pest Control Practice Test

Understanding plant identification involves matching growth form, leaf shape, flower appearance, and seed structure. The description given—coarse perennial up to four feet tall, light green or oval leaves, elaborate crown-like flowers that are pink to rose-purple, and tan seedpods about three inches long containing hairs around the seeds—fits Showy Milkweed precisely. The pink to purple crown-like flowers and the distinctive three-inch tan pods that enclose silky, hair-like floss used for wind dispersal are hallmark traits of milkweed. Downy Brome is a grass with a loose seed head and does not have crown-like pink flowers. Larkspur produces tall flower spikes with different leaves, not crown-like blooms. St. John’s Wort shows yellow flowers and lacks the milkweed-style seed floss and pod characteristics.