Calamagrostis holmii

(c) SD, some rights reserved (CC BY-NC), uploaded by SD via iNaturalist

Species

Holm’s Reedgrass

Calamagrostis holmii

Holm's Reedgrass is a perennial grass native to North America, known for its dense clumps and feathery flower panicles.

Also known as: Holm's Reedgrass

Calamagrostis holmii, commonly known as Holm’s Reedgrass, is a perennial grass native to the temperate regions of North America, particularly found in wetland areas and along riverbanks. This species typically grows to a height of 2 to 4 feet, forming dense clumps that provide excellent ground cover. The leaves are narrow, linear, and can reach lengths of up to 12 inches, exhibiting a vibrant green color that turns golden in the fall. The inflorescences are feathery panicles that emerge in late spring to early summer, producing small, wind-dispersed seeds that contribute to its ecological role in stabilizing soil and providing habitat for various wildlife species.

Holm’s Reedgrass plays a significant role in its ecosystem by preventing soil erosion and providing food and shelter for birds and small mammals. It thrives in moist, well-drained soils and is often found in disturbed areas, making it an excellent choice for restoration projects. This species is also known for its adaptability to varying moisture levels, allowing it to survive in both wet and moderately dry conditions. While it is not widely utilized in landscaping, its ornamental value and ecological benefits make it a valuable addition to natural gardens and conservation areas.

Care Guide

🌱 Hardiness Zone
Zone 4–8
🪨 Soil
well-drained soil
☀️ Light
full sun to partial shade
💧 Water
moderate moisture
🌿 Fertilization
light annual fertilization

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Browse This Plant's Classification

Domain Eukaryota
Kingdom Plantae
Phylum Magnoliophyta
Class Liliopsida
Order Cyperales
Family Poaceae
Genus Calamagrostis
Species Calamagrostis holmii