Goldenrod leaves are long and thin, with a lance-like shape. In contrast, ragweed has lobed leaves that are more reminiscent of the plant artemisia, or even the leaves of tomatoes. Both ragweed ...

Goldenrod, for example, can perceive neighboring plants without ever touching them by sensing far-red light ratios reflected off leaves. When goldenrod is eaten by herbivores, it adapts its ...

View Full Profile. Learn about our Editorial Policies. When a beetle larva bites into the leaf of a goldenrod plant, a perennial herb known for its bright yellow flowers, it gets a mouthful of food to ...