Calamagrostis koelerioides Plant Care

Calamagrostis koelerioides (Calamagrostis koelerioides) belongs to the Poaceae family within the Calamagrostis genus. Calamagrostis koelerioides is native to western North America commonly known as the fire reedgrass, dense-pine reedgrass, pineland reedgrass, or San Diego reedgrass.

Calamagrostis koelerioides displays a clump-forming grass growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Calamagrostis koelerioides produces feathery flower heads in summer.

Leaf size: approximately 12 inches.

Calamagrostis koelerioides requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Calamagrostis koelerioides thrives in full sun to partial shade.

Calamagrostis koelerioides grows best at temperatures of 50–80°F. Calamagrostis koelerioides prefers humidity levels of 40–70%.

Well-draining loamy soil with good organic content. Good drainage is essential for Calamagrostis koelerioides to prevent waterlogging, which leads to root rot and fungal issues.

Feed Calamagrostis koelerioides every 8 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.

Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Divide clumps every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Calamagrostis koelerioides can be propagated through division, seed sowing. Similar propagation techniques also apply to feather reed grass plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Calamagrostis koelerioides is susceptible to aphids, grasshoppers, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Calamagrostis koelerioides grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Calamagrostis koelerioides is native to western North America commonly known as the fire reedgrass, dense-pine reedgrass, pineland reedgrass, or San Diego reedgrass. In cooler regions, grow Calamagrostis koelerioides as a houseplant or bring it indoors before the first frost.