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Plant Database
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Grass
Invasive
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Aquatic
Grass or Grass-like
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Soil & Moisture
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Aquatic
Moist to wet
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Suggested Action
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Report to Oregon Invasives Hotline
Use BMPs to control on private property
a specimen showing leaf and inflorescence
Big-Leaf Sedge
Carex amplifolia
Grass
Native
close up of a dense sedge sowing bunch like form and long linear leaves
Dense Sedge
Carex densa
Grass
Native
A field of slough sedge plants. Tough leaves that catch the light.
Slough Sedge
Carex obnupta
Grass
Native
a single chamisso sedge with leaves a littl eunder half the height of the inflorescence stalks, which rise above and nod
Chamisso Sedge
Carex pachystachya
Grass
Native
Small white flower on bushy stems
Brazilian Elodea
Egeria densa
Invasive
spikerush plants - stems and inflorescences
Creeping Spikerush
Eleocharis palustris
Native
purple flowers
King’s Gentian
Gentiana sceptrum
Native
Long (aquatic) roots and long stem with many small green leaves
Hydrilla
Hydrilla verticillata
Invasive
Yellow Flag Iris Iris pseudacorus Large yellow flower with large petals
Yellow Flag Iris
Iris pseudacorus
Invasive
bunches of soft rush growing in standing water
Pacific Rush
Juncus effusus
Native
Yellow Archangel Lamiastrum galeobdolon Groundcover of green and white varigated leaves
Yellow Archangel
Lamiastrum galeobdolon
Invasive
Small yellow flower
Large-Flower Primrose Willow
Ludwigia grandiflora ssp. grandiflora
Invasive
Juvenile Ludwigia leaves are spatulate in shape and star-shaped in arrangement.
Six-Petal Water Primrose
Ludwigia grandiflora ssp. hexapetala
Invasive
Floating Primrose-willow Ludwigia peploides Large floating mat of long slender green leaves and small yellow flowers
Floating Primrose-Willow
Ludwigia peploides
Invasive
a carpet of parrotfeather clogs a waterbody.
Parrotfeather
Myriophyllum aquaticum
Invasive
Small stem coming out of water with small yellow flower
Yellow Floating Heart
Nymphoides peltata
Invasive
a patch of wapato in the river with upright arrow shaped leaves pointing upward about 2 ft tall.
Wapato
Sagittaria latifolia
Native
Large green shiny leaves with small yellow flower
European Waterchestnut
Trapa natans L
Invasive
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Life Forms

Shade Tolerances

Soil & Moisture Conditions

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