Seep Muhly Grass 'Undaunted'
Muhlenbergia reverchonii 'Undaunted'
Airy pink-purple plumes from late summer that hold into winter. Selected for cold hardiness, it shrugs off heat, drought, and rocky soil.
Typically 1 pint–1 gal · $9–$30 · final price at pickup
- Thu, Aug 138 AM – 4 PM
- Fri, Aug 148 AM – 4 PM
- Sat, Aug 158 AM – 2 PM
The most spectacular fall ornamental grass for small spaces. pink-purple plumes that glow in late September light.
'Undaunted' Seep Muhly is a fine-textured native grass selected specifically for its ability to tolerate cold winters far north of its Texas homeland. In late summer and fall the plant erupts in a haze of pinkish-purple flower plumes that catch the light and seem to glow from within on sunny September afternoons. The plumes rise well above the tight mound of narrow foliage, creating an airy, billowing effect that moves in any breeze. The name tells you something important about the plant: it's tough. Hot summers, cold winters, dry soil, rocky conditions: it handles all of these without complaint. The pink-purple fall color transition makes it a standout in late-season border compositions and meadow plantings, and it holds its form and color well into winter. A significant improvement over the parent species for northern gardens, with all the ornamental quality maintained.
A nursery-grown plant, ready for the ground.
Healthy, container-grown seep muhly grass 'undaunted' propagated on-site at Hill House from regional genetics. Includes a one-page care card. We make every effort to supply plants as listed; occasionally we substitute a similar species of equal value.
Plant seep muhly grass 'undaunted' instead of Pennisetum alopecuroides (fountain grass) in dry settings. Same job in the garden, without the spread.
- Sun
- Full sun
- Water
- Dry
- Mature size
- 1.5–2.5 ft · 18–24 in wide
- Bloom time
- Late summer through winter
- Bloom color
- Pink, Purple
- USDA zones
- 5–9
- Family
- Poaceae
- Native range
- Texas and Oklahoma; 'Undaunted' selected for cold hardiness and northern garden performance
Care notes for seep muhly grass 'undaunted'.
Plant in full sun in well-drained to dry soil. Excellent heat and drought tolerance. Cut back to 3-4 inches in late winter before new growth. Division every few years helps maintain vigor. Does not tolerate wet winter conditions in cold climates. excellent drainage is essential. Avoid heavy clay.
Pairs well with these.
Same light, same soil, same wildlife. Janet's picks to plant alongside seep muhly grass 'undaunted'.
Or skip the guesswork.
Curated packages bundle complementary species for an instant habitat. One reservation, one pickup day, a printed layout map.

Short on Space Package
For gardeners who have an abundance of passion but are short on space, this package features tidy, upright, clump-forming natives that behave and function well in small spaces.

Shade Bed Package
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Birder’s Paradise Package
For the avid bird watchers and budding ornithologists in our community, the Birder’s Paradise Package consists of species that Hill House Nursery staff and longtime native plant advocates such as Doug Tallamy consider ‘premier bird garden plants’.