Red shrubby penstemon is a flowering plant native to North America. This plant belongs to the Penstemon family and is known for its vibrant red flowers that bloom in late spring or early summer. There are several synonyms for red shrubby penstemon, including firecracker penstemon, beardtongue, scarlet bugler, and hummingbird sage. The plant grows up to 2-3 feet tall and has long, narrow leaves that are a grayish-green color. Firecracker penstemon is a fitting synonym, as the striking red flowers resemble tiny firecrackers exploding on the plant. Beardtongue refers to the protruding stamen that resembles a tongue, while hummingbird sage is appropriate as it's a popular nectar source for hummingbirds.