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Description
Calamagrostis Nutkaensis, commonly known as Pacific Reed Grass, is a cool-season, clumping grass that is native to the Pacific Northwest region of North America. It is a popular ornamental grass due to its attractive, upright growth habit and feathery, silver-green foliage. The plant is typically found in wetlands, meadows, and along streams and seashores.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Liliopsida |
| Order | Poales |
| Family | Poaceae |
| Genus | Calamagrostis |
Appearance
Pacific Reed Grass can grow up to 3-4 feet tall and 2-3 feet wide, forming a dense clump of upright stems with arching foliage. The leaves are narrow, linear, and about 12-18 inches long, with a bluish-gray or silver-green color. In summer, the plant produces tall, feathery flower spikes that can reach up to 5 feet in height. The flowers are purplish-brown and have a slightly drooping appearance. The seeds are small and light, allowing them to disperse easily in the wind.
Care Guide
Pacific Reed Grass is a low-maintenance plant that is easy to grow in a variety of conditions. Here are some tips for keeping your Calamagrostis Nutkaensis healthy and thriving:- Water: Pacific Reed Grass prefers moist, well-draining soil, especially during the growing season. Water deeply once or twice a week, depending on the weather and soil conditions.- Fertilization: The plant does not require regular fertilization, but you can apply a slow-release, balanced fertilizer in early spring to promote growth and vigor.- Soil: Calamagrostis Nutkaensis prefers fertile, loamy soil with a slightly acidic pH (around 6.0-6.5). If your soil is heavy or poorly draining, amend it with compost or sand to improve drainage.- Sunlight: Pacific Reed Grass thrives in full sun to partial shade, with at least 4-6 hours of direct sunlight per day. In hot climates, it may benefit from some afternoon shade to prevent leaf scorch.- Hardiness Zones: Calamagrostis Nutkaensis is hardy in USDA zones 5-9, which means it can tolerate winter temperatures down to -20°F.
Common Pests & Diseases
Pacific Reed Grass is relatively resistant to pests and diseases, but it may be susceptible to certain issues under certain conditions. Here are some of the most common problems that may affect your Calamagrostis Nutkaensis:- Rust: This fungal disease can cause orange or brown spots on the leaves and stems, as well as distortion and premature death of the plant. Remove and destroy infected plant parts and avoid overhead watering to prevent the spread of spores.- Aphids: These small, sap-sucking insects can cause stunted growth, yellowing leaves, and distorted shoots. They can be controlled with insecticidal soap or neem oil.- Slugs and snails: These mollusks can leave large holes in the leaves and damage the flower spikes. You can use traps, baits, or copper tape to deter them from your plants.
Habitat
Calamagrostis Nutkaensis is native to the Pacific Northwest region of North America, including Alaska, British Columbia, Washington, and Oregon. It is typically found in wetland areas, such as marshes, bogs, and swamps, as well as meadows, prairies, and along streams and seashores. The plant is an important component of many natural ecosystems, providing habitat and food for a variety of wildlife, including birds, mammals, and insects.
Question and Answer
Q: Is Pacific Reed Grass invasive?
A: No, Calamagrostis Nutkaensis is not considered invasive in most areas. However, it may spread slowly by rhizomes and self-seeding, so it is recommended to divide the clumps every few years to control its growth.
Q: Can I grow Pacific Reed Grass in a container?
A: Yes, you can grow Calamagrostis Nutkaensis in a large, deep container with good drainage. Make sure to use a high-quality potting mix and water regularly to keep the soil moist.
Q: When should I prune Pacific Reed Grass?
A: You can prune Calamagrostis Nutkaensis in late winter or early spring before new growth appears. Cut back the old stems to about 6 inches above the ground to promote new growth and prevent the plant from getting too woody or leggy.
Q: Can I use Pacific Reed Grass as a screening plant?
A: Yes, Calamagrostis Nutkaensis can be used as a tall, ornamental screen in the landscape. Plant it in a row or group along a fence, wall, or property line to create a natural barrier and add texture and interest to your garden.
Related Plants
Here are some other plants that are related to Calamagrostis Nutkaensis:- Calamagrostis acutiflora (Feather Reed Grass)- Calamagrostis brachytricha (Korean Feather Reed Grass)- Calamagrostis x acutiflora ‘Karl Foerster’ (Karl Foerster Feather Reed Grass)- Calamagrostis x acutiflora ‘Overdam’ (Variegated Feather Reed Grass)
References
- https://www.fs.fed.us/database/feis/plants/graminoid/calnut/all.html
- https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=281400&isprofile=0&basic=calamagrostis
- https://www.gardenia.net/plant/calamagrostis-nutkaensis-pacific-reed-grass
- https://www.gardeningknowhow.com/ornamental/foliage/pacific-reed-grass/pacific-reed-grass-care.htm
