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Calamagrostis arundinacea
rough reedgrass
Calamagrostis arundinacea
Calamagrostis arundinacea, commonly known as reed grass, is a perennial bunchgrass native to Europe and Asia. It forms dense clumps and features upright stems with linear leaves. The plant produces feathery, plume-like flower heads that can range in color from green to purplish-brown, adding visual interest. It is well-suited for various garden settings, including borders, naturalistic plantings, and erosion control.
CategoryDetails
Plant TypePerennial plant
Estimated Plant Lifespan5 years lifespan
Sun Requirements6+ hours direct sunlight (Full Sun)
Pollination

Method: Wind

Watering Requirements

Method: Water deeply

Frequency: Regularly, especially during dry spells.

Notes: Avoid overwatering to prevent root rot.

Humidity Requirements

Level: Moderate

Maintenance: Provide good air circulation, especially in humid climates.

Temperature Range

Min: -30°C

Max: 30°C

Alternative NamesDeyeuxia pyramidalis, Deyeuxia arundinacea, Calamagrostis sugawarae, Deyeuxia brachytricha, Calamagrostis monticola
Echinacea purpurea
purple coneflower
Echinacea purpurea
Purple coneflowers provide contrasting flower shapes and colors, and their similar sunlight and soil requirements make them suitable companions. They also attract pollinators, benefiting the overall garden ecosystem.
Phalaris arundinacea
reed canary grass
Phalaris arundinacea

Reed canary grass is an aggressive spreader, and can outcompete Calamagrostis arundinacea for resources such as sunlight, water, and nutrients, leading to the decline of the reed grass. While not considered invasive, it can still be overly vigorous in the garden.

Aphids

Aphids are small, soft-bodied insects that suck plant sap. They can cause yellowing leaves and stunted growth. Infestations can weaken the plant and make it more susceptible to other issues.

Spider mites

Spider mites are tiny pests that feed on plant cells, causing stippling and bronzing of leaves. Severe infestations can lead to leaf drop. They thrive in hot, dry conditions.

Steps:

    • For division: Dig up established clumps in early spring or fall.
    • Divide the clump into smaller sections, ensuring each has roots and shoots.
    • Replant the divisions in prepared soil, spacing them appropriately.
    • Water well after planting and provide consistent moisture until established.
    • For seed: Collect seeds from mature flower heads in late summer or fall.
    • Sow seeds indoors in early spring or directly outdoors after the last frost.
    • Keep the soil consistently moist until germination.
    • Thin seedlings as needed, spacing them according to the mature plant size.

Neem Oil

Effective for controlling aphids and spider mites, acts as a natural insecticide and miticide.

Compost

Improves soil structure, drainage, and fertility, promoting healthy growth.

Balanced slow-release fertilizer

Supports vigorous growth and flowering, especially in nutrient-poor soils.