Pentanema montanum
Pentanema montanum, known as Mountain inula or Mountain elecampane, is a perennial ornamental plant that thrives in full sun with medium water needs. It typically grows to a height of 0.6–1.5 meters and is suitable for USDA zones 5–9. This plant produces yellow flowers from July to September and prefers loamy, sandy, or chalky soils. It is not fragrant but attracts pollinators, is non-toxic, and non-evergreen.
Light
Full sun
Watering
Medium water
Soil
Loamy, Sandy, Chalky
Height
0.6–1.5 m
Spread
0.4–0.6 m
Zones
5–9
Flower colors
Mountain inula is a robust perennial that prefers well-drained soil and full sun exposure. It is relatively drought-tolerant once established but benefits from regular watering during dry spells. Its sturdy stems make it suitable for borders and cut flower arrangements. Deadheading spent blooms can encourage a longer flowering period. It is generally pest-free and requires minimal maintenance. It can be propagated by division in early spring or autumn.
With its bright yellow daisy-like flowers, Pentanema montanum adds a splash of color to the summer garden. It pairs well with other perennials such as salvias, echinaceas, and ornamental grasses. Its upright growth habit makes it ideal for the middle or back of a border, providing structure and visual interest.