Bamboo Grass
Cenchrus mezianus · Poaceae
The gardener's calendar
Bamboo grass is in full bloom: enjoy it, watch watering in hot weather and let spent flowers feed pollinators before pruning.
ID card
- Family
- Poaceae (grass)
- Foliage
- Deciduous, finely linear
- Flowering
- July to September, silvery feathery spikes
- Mature size
- 80 cm in height
- Growth
- Fast
- Exposure
- Full sun
- Water needs
- Low, drought tolerant
- Origin
- Arid regions of West Africa
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability low.
Expert tips
The key tip
Cenchrus mezianus is an airy ornamental grass: water sparingly after establishment (one season is enough). It grows mainly in summer-fall, stays quiet in spring, then puts on its floral show in August-September.
The common mistake
Thinking you need to divide or heavily prune it: just leave it alone and cut it back to ground level in February before new growth starts.
The pro's trick
Don't clean up the flower heads in autumn: leave them all winter, they're ornamental when frosted and protect the crown.
Care
Exposure
This grass requires a minimum of 6 hours of direct sunlight daily to develop fully and produce its spectacular silvery feathery spikes. Full sun exposure is ideal and enhances the plant's compactness and vigor. It tolerates hot, sunny exposures very well without damage.
Watering
Establish regular watering during the first planting season to promote root establishment. Once established, this grass is very drought tolerant and requires only occasional watering, except during extreme drought. Avoid excessive moisture that could promote rot.
Soil
Fountain grass prefers well-draining soil, even poor or sandy soil, and tolerates both acidity and alkalinity. Improve drainage if your soil retains too much water. No major corrections are necessary; it's a grass with few demands regarding substrate fertility.
Fertilizer
No fertilizer is really essential, as this grass is naturally modest in its needs. A light application of organic fertilizer in spring can stimulate growth during the first year. Avoid excessive nitrogen fertilizers that would make the plant too soft.
Pruning and cleanup
Cut the clump down to ground level at the end of winter or very early spring before growth resumes. Remove dead and dried leaves as needed to maintain a neat appearance. No pruning during the growing season.
Diseases and pests
This hardy grass is rarely subject to diseases or pest attacks. Excess winter moisture can occasionally cause collar rot; ensure good drainage. No specific treatment is generally necessary.
Did you know?
The name Cenchrus comes from the Greek 'kegkhros', designating a type of millet, while 'mezianus' refers to the Mezen region in West Africa. This grass produces characteristic spikes shaped like small brushes or hedgehogs, hence its evocative nickname, which enables efficient dispersal by clinging to clothing and animal fur.
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.
Add this plant to my garden →Plants from the same family
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- Purple moor-grassMolinia caerulea
- Reed canary-grassPhalaris arundinacea
- Common quaking grassBriza media
- Creeping soft-grassHolcus mollis
Tips generated and checked by Viridia — adapt them to your local climate.