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Cenchrus setaceus

Cenchrus setaceus · Poaceae

The gardener's calendar

The right move for September

Ideal time to plant cenchrus setaceus: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Common name
Red fountain grass, Feathertop
Foliage
Evergreen, fine and supple, light green to reddish tint
Flowering
Summer to autumn (July-October), feathery pink to red spikes
Adult size
24-36 inches tall, spreading and arching habit
Growth
Rapid
Hardiness
Frost-tender, grow in temperate to mild climates (32 to 41°F)
Origin
Arid regions of North Africa and the Middle East
Soil type
Well-drained, poor to moderate, tolerates drought

Care

Watering

Water regularly during summer growth, then reduce in autumn and winter. Once established, this ornamental grass tolerates drought well and fears excess water more than scarcity. In containers, let the substrate dry slightly between waterings to prevent root rot.

Light exposure

Place this grass in full sun to optimize its growth and the intensity of its pink to red colorations. It also tolerates partial shade, but will be less floriferous and more compact. Protect it from strong winds that could break its graceful stems.

Pruning and cleanup

Cut back to ground level in late winter or early spring, before vegetation resumes. You can also remove faded spikes throughout autumn to encourage prolonged flowering. Cut gently to avoid damaging the basal shoots.

Fertilizing

A balanced fertilizer application in spring is generally sufficient. This grass comes from poor environments and doesn't require intensive feeding. In containers, a light application in early summer can support flowering without excess.

Soil and drainage

Choose well-drained substrate: light garden soil mixed with sand or gravel. In very humid regions, elevate plantings or grow in containers. Adding organic matter is unnecessary; poor soil is enough.

Diseases and pests

Generally very resistant. In excessively humid conditions, watch for root rot and fungal issues: prioritize drainage and air circulation. True pests are rare; simply check for spider mites in very dry conditions.

Did you know?

Cenchrus setaceus has become a problematic invasive in the Mediterranean and certain desert regions, where its ability to colonize arid soils makes it difficult to control. Despite its ornamental beauty, it appears on black lists in several countries—a reminder that the most graceful plants can become a real ecological scourge outside their original context.

Where to buy it

Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.

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Tips generated and checked by Viridia — adapt them to your local climate.