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Fountain Grass

Cenchrus setaceus

Also listed as Pennisetum ruppellii, Pennisetum setaceum

Also known as Crimson Fountain Grass, Purple Fountain Grass, African Fountain Grass

grass☀️ full sun💧 low water❄ Hardy: Zone 9a – Zone 11b

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An ornamental grass known for its feathery, fountain-like plumes that emerge in late summer and fall. It thrives in hot, dry conditions and adds vertical interest and movement to garden landscapes.

Why grow it

Fountain grass provides fine-textured vertical accent with lower maintenance than many ornamental grasses once established in suitable conditions. Compared to related Pennisetum species, C. setaceus produces particularly delicate, feathery inflorescences that catch light effectively. It tolerates poor, sandy, or gravelly soils where many ornamentals struggle, making it useful for challenging microclimates rather than prime garden real estate.

Watch out for

In areas with consistent summer moisture or high humidity, this grass may develop fungal issues or decline unexpectedly despite hot-dry preferences. Container specimens may require adjustment to typical watering schedules as pot drainage differs significantly from in-ground conditions. Regular deadheading after flowering can prevent excessive self-seeding if that becomes a concern in your garden.

Overview

Form
Upright
Growth Rate
fast
Size
3–6′ tall × 2–4′ wide
Dormancy
evergreen
Family
Poaceae
biomass/mulcherosion controlwildlife benefitwindbreak

Native Range

North Africa and the Middle East

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SummerFall

Notable Cultivars

Cenchrus setaceus 'Rubrum' is a cultivar of Cenchrus setaceus. This burgundy-leaved selection is grown as a sterile ornamental grass and does not set viable seed, unlike the species.

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Companion Planting

Plants well with