Characteristics: Yellow rabbitbrush is one of a few plants that bloom as late as August to October. Flowers are tiny, yellow and many are in a dense cluster. Height can range from 1 to 3 feet tall and is densely branched. Fun Facts: This unique species contains 2-6% rubber which allows the branches to be very flexible. In the past, rabbitbrush was burned to smoke hides. Flowers were also boiled to extract a yellow color to be used as a dye.