Rhinanthus riphaeus
Rhinanthus riphaeus is an annual ornamental plant from the Orobanchaceae family, growing to a height of 0.2–0.5 meters. It prefers full sun and medium water conditions, suitable for USDA zones 4–8. This plant blooms from May to August with yellow flowers and prefers loamy, sandy, or chalky soil. It is not fragrant but attracts pollinators.
Light
Full sun
Watering
Medium water
Soil
Loamy, Sandy, Chalky
Height
0.2–0.5 m
Spread
0.1–0.3 m
Zones
4–8
Flower colors
This annual thrives in full sun and requires medium watering. It prefers well-drained soils such as loamy, sandy, or chalky types. As an annual, it completes its life cycle in one growing season. Sow seeds directly in the garden after the last frost. It is known to be a hemiparasitic plant, meaning it derives some nutrients from host plants, which can be beneficial in certain garden settings.