Cenchrus setaceus
naturalizedPoaceae

Cenchrus setaceus

Fountain Grass

Naturalized (non-native)non-native

Introduced and now reproducing on its own in the wild.

Cenchrus setaceus, commonly known as crimson fountaingrass, is a C4 perennial bunch grass that is native to open, scrubby habitats in East Africa, tropical Africa, the Middle East and south-western Asia. It has been introduced to many parts of the world as an ornamental plant, and has become an invasive species in some of them. It is drought-tolerant, grows fast, reaches 3 feet in height, and has many purple, plumose flower spikes.

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summary via Wikipedia · CC BY-SA
Seasonality

Only 14 phenology-annotated observations exist for this species in Hawaiʻi — too few to describe a season. No window is inferred.

What works

Controlling Cenchrus setaceus

From Weed Control by Species5 rows →

Best reported: foliar with 2% Round-up, 98% water — one report from OISC.

  1. 5.0foliar2% Round-up, 98% waterGlyphosateG91 report · 1 observed
    OISC
    • 5successful. Recommended method · OISC · observed · 2018-04-24

      applied on the ground

      Size: apply when grass is greenHabitat: dry
  2. 5.0foliar1.5% Round Up Pro Max, 98% Water, 0.5% Turf traxGlyphosateG91 report
    OISC
    • 5successful. Recommended method · OISC · 2018-02-05

      applied on the ground and aerially

      Size: apply when grass is green
  3. 5.0aerial ball sprayer2% Round-up, 98% waterGlyphosateG91 report · 1 observed
    OANRP
    • 5successful. Recommended method · OANRP · observed · 2015-02-23

      Applied from air, has been very effective.

      Size: apply when grass is greenHabitat: dry
  4. 4.0foliar2% Round-up, 0.5-1% IMZ, 1-3% ammonium sulfateGlyphosateG9ImazapyrG21 report · 1 observed
    BINARS
    • 4more than moderate satisfaction · BINARS · observed · 2015-03-05

      Used in Manuka NAR with Solo backpack sprayer, 100 gl Pac-Tank with high success. and doing arial boom trials since 10/2013

      Habitat: dry
  5. 2.0aerial boom spray2% Round-up, 0.5-1% IMZ, 1-3% ammonium sulfateGlyphosateG9ImazapyrG21 report · 1 observed
    BINARS
    • 2minimal satisfaction · BINARS · observed · 2015-03-05

      Been doing trials since 10/2013. Mix worked well in ground applications, but not so well for boom spraying.

      Habitat: dry

Ratings are the reporting organisation’s own, on a 5-point scale. Always follow the product label — the label is the law. See these 5 rows in the full table

Gallery · 7 · iNaturalist
open-licensed photos · click any to view its source
Where documented · 46 ahupuaʻa
documented occurrences · iNaturalist + GBIF · iNaturalist 197 · GBIF 295 records
Waimea, Waikoloa · HawaiʻiiNat 15 · GBIF 48 ✓
Waikīkī · OʻahuiNat 24 · GBIF 32 ✓
Puʻuwaʻawaʻa · HawaiʻiiNat 24 · GBIF 30 ✓
Keahuolū · HawaiʻiiNat 9 · GBIF 18 ✓
Honokōhau 1-3 · HawaiʻiiNat 10 · GBIF 13 ✓
Kealakehe · HawaiʻiiNat 9 · GBIF 13 ✓
Kalaoa 1-5 · HawaiʻiiNat 9 · GBIF 11 ✓
Kaloko · HawaiʻiiNat 7 · GBIF 13 ✓
Kaʻohe Mauka · HawaiʻiiNat 7 · GBIF 10 ✓
ʻOʻoma 1 · HawaiʻiiNat 7 · GBIF 9 ✓
Kailua · OʻahuiNat 8 · GBIF 8 ✓
Maunalua · OʻahuiNat 7 · GBIF 8 ✓
Kohanaiki · HawaiʻiiNat 6 · GBIF 8 ✓
Puʻuanahulu · HawaiʻiiNat 8 · GBIF 6 ✓
Keauhou 2 · HawaiʻiiNat 4 · GBIF 3 ✓
Kaʻūpūlehu · HawaiʻiiNat 3 · GBIF 2 ✓
Kawaihae 2 · HawaiʻiiNat 1 · GBIF 3 ✓
ʻOʻoma 2 · HawaiʻiiNat 1 · GBIF 3 ✓
Waimānalo · OʻahuiNat 2 · GBIF 2 ✓
ʻAnaehoʻomalu · HawaiʻiiNat 1 · GBIF 3 ✓
Kaʻā · LānaʻiiNat 2 · GBIF 2 ✓
Kawaihae 1 · HawaiʻiiNat 2 · GBIF 1 ✓
Moanalua · OʻahuiNat 1 · GBIF 2 ✓
Kahuku · HawaiʻiiNat 1 · GBIF 2 ✓
Hōnaunau · HawaiʻiiNat 1 · GBIF 1 ✓
N/A · KahoʻolaweiNat 1 · GBIF 1 ✓
ʻŌuli · HawaiʻiiNat 1 · GBIF 1 ✓