How to Grow and Care for Rosinweeds

The cup plant is native to Eastern and Central United States. The typical height of this plant ranges from 91 to 244 cm and blooms look very similar to sunflowers. Although it is a native species, the cup plant has been declared in invasive species in many states in the U.S.

Compassplant (Silphium laciniatum) is a flowering perennial herb native to North America. Compassplant is also commonly referred to as the prairie compass plant, pilotweed, polarplant, gum weed, cut-leaf silphium, and the turpentine plant. This species is commonly cultivated in gardens.

This perennial, the roughstem Rosinweed or Silphium radula, is a member of the aster or sunflower family. It grows upright and is topped by yellowish-green blossoms, making it a popular border plant. It prefers dry, poor soil and will topple over if the soil is too rich or wet.

Prairie dock (Silphium terebinthinaceum) is a perennial plant that will grow to 2.5 m tall. The leaves have a sandpaper texture and are 46 cm long. Blooms in summer with a tall flowering stalk filled with showy, yellow flowers. The nectar attracts all kinds of bees and the seeds provide food for goldfinches. Drought-resistant, it grows in full sun or partial shade.

Wholeleaf Rosinweed is an herbaceous perennial that will grow from 61 to 183 cm tall. It blooms from summer to fall with yellow daisy-like flowers. The blossoms attract birds and butterflies. It grows best in locations with full sun.