IVM_Plant_Guide.pdf

Ada County Highway District

Integrative Vegetation Management Plant Guide

August 25, 2026

*This guide is not an all-inclusive list of desirable and non-desirable species.

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Table of Contents

Grass

Desirable Species

Common Weed Species

Invasive Weed Species

Noxious Weed Species

Grass-Like

Desirable Species

Forbs

Desirable Species

Site Specific Approval Required Species

Common Weed Species

Invasive Weed Species

Noxious Weed Species

Shrubs

Desirable Species

Invasive Weed Species

Shrub/Trees

Desirable Species

Trees

Desirable Species

Invasive Weed Species

Noxious Weed Species

Grass Species

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Grasses

Desirable Species

Scientific Name Common Name

Achnatherum hymenoides Indian Ricegrass

Achnatherum thurberianum Thurber's Needlegrass

Agropyron cristatum Crested Wheatgrass

Agropyron fragile Siberian Wheatgrass

Agrostis scabra Rough Bentgrass

Aristida purpurea Purple Threeawn

Beckmannia syzigachne American Sloughgrass

Bouteloua curtipendula ‘niner’ Sideoats Grama

Dactylis glomerata Orchardgrass

Deschampsia cespitosa Tufted Hairgrass

Distichlis spicata Saltgrass

Elymus glaucus Blue Wildrye

Elymus elymoides Bottlebrush Squirreltail

Elymus canadensis Canada Wildrye

Elymus trachycaulus Slender Wheatgrass

Elymus lanceolatus Thickspike Wheatgrass

Eremopyrum triticeum Annual Wheatgrass

Festuca perennis Annual Ryegrass

Festuca rubra Creeping Red Fescue

Festuca idahoensis Idaho Fescue

Festuca ovina Sheep Fescue

Glyceria striata Fowl Mannagrass

Glyceria occidentalis Western Mannagrass

Hesperostipa comata Needle-and-Thread

Hordeum jubatum Foxtail Barley

Hordeum brachyantherum Meadow Barley

Hordeum murinum ssp. Glaucum Smooth Barley

Koeleria macrantha Prairie Junegrass

Leymus cinereus Basin Wildrye

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Desirable Species (Cont.)

Scientific Name Common Name

Pascopyrum smithii Western Wheatgrass

Phleum alpinum Alpine Timothy

Phleum pratense Timothy

Piptatheropsis exigua Little Ricegrass

Poa bulbosa Bulbous Bluegrass

Poa compressa Canada Bluegrass

Poa palustris Fowl Bluegrass

Poa pratensis Kentucky Bluegrass

Poa fendleriana Muttongrass

Poa secunda ssp. Sandbergii Sandberg Bluegrass

Polypogon monspeliensis Annual Rabbitsfoot Grass

Pseudoroegneria spicata Bluebunch Wheatgrass

Schedonorus arundinaceus Tall Fescue

Sporobolus airoides Alkali Sacaton

Sporobolus cryptandrus Sand Dropseed

Thinopyrum intermedium Intermediate Wheatgrass

Vulpia myuros Annual Fescue

Vulpia octoflora Sixweeks Fescue

Common Weed Species

Scientific Name Common Name

Echinochloa crus-galli Barnyardgrass

Panicum capillare Witchgrass

Vulpia bromoides Brome Fescue

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Invasive Weed Species

Scientific Name Common Name

Agrostis stolonifera Creeping Bentgrass

Alopecurus pratensis Meadow Foxtail

Bromus arvensis Field Brome

Bromus hordeaceus Soft Brome

Elymus reopens Quackgrass

Phalaris arundinacea Reed Canarygrass

Secale cereale Cereal Rye

Setaria pumila Yellow Foxtail

Taeniatherum caput-medusae Medusahead

Noxious Weed Species

Scientific Name Common Name

Aegilops cylindrica Host Jointed Goatgrass

Bromus tectorum Cheatgrass

Milium vernale Bieb. Spring Millet

Nardus stricta L. Matgrass

Phragmites australis (Cavanilles)

Trinius ex Steudel Common Reed

Sorghum halepense (L.) Pers. Johnsongrass

Grass-Like Species

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Grass-Like

Desirable Species

Scientific Name Common Name

Carex utriculata Common Beaked Sedge

Carex douglasii Douglas's Sedge

Carex geyeri Geyer's Sedge

Carex nebrascensis Nebraska Sedge

Carex utriculata Northwest Territory Sedge

Carex pellita Wooly Sedge

Eleocharis palustris Common Spikerush

Juncus arcticus Arctic Rush

Juncus balticus Baltic Rush

Juncus saximontanus Mountain Rush

Juncus ensifolius Swordleaf Rush

Schoenoplectus pungens Common Threesquare

Scirpus microcarpus Panicled Bulrush

Scirpus microcarpus Small-fruited Bulrush

Forbs Species

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Forbs

Desirable Species

Scientific Name Common Name

Achillea desderos Desert Eve Deep Rose Yarrow

Achillea filipendulina Fernleaf Yarrow

Achillea millefolium 'summer pastels' Summer Pastels Yarrow

Achillea millifolium Western Yarrow

Antennaria dimorpha Low Pussytoes

Anthemis cotula Mayweed Chamomile

Asclepais speciosa Torr. Showy Milkweed

Asclepias fascicularis Narrowleaf Milkweed

Asclepias incarnata Swamp Milkweed

Asclepias tuberosa Butterfly Milkweed

Astragalus purshii Pursh's Milkvetch

Balsamorhiza hookeri Hooker's Balsamroot

Balsamorhiza sagittata Arrowleaf Balsamroot

Carum carvi L. Wild Caraway

Centaurea cyanus Bachelor's Button

Chaenactis douglasii False Yarrow

Chamerion angustifolium Fireweed

Cleome serrulata Rocky Mountain Bee Plant

Collinsia parviflora Maiden Blue-eyed Mary

Comandra umbellata Bastard Toadflax

Conyza bonariensis Hairy Fleabane

Conyza canadensis Horseweed

Crepis acuminata Tapertip Hawksbeard

Cuscuta spp. Dodder

Delphinium bicolor Little Larkspur

Draba verna Spring Draba

Echinacea pallida Pale Purple Cone Flower (Echinacea)

Epilobium brachycarpum Panicled Willoweed

Epilobium paniculatum Tall Annual Willowherb

Erigeron annuus Fleabane

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Desirable Species (Cont.)

Scientific Name Common Name

Erigeron pumilus Shaggy Fleabane

Erigeron speciosus Aspen Fleabane

Eriogonum heracleoides Parsnipflower Buckwheat

Eriogonum jamesii James Buckwheat

Eriogonum strictum Strict Buckwheat

Eriogonum umbellatum Sulphur-flower Buckwheat

Eriophyllum lanatum Common Wooly Sunflower

Eschscholzia californica California Poppy

Gaillardia aristata Blanketflower

Geranium viscosissimum Sticky Purple Geranium

Glycyrrhiza lepidota Wild Licorice

Gnaphalium palustre Western Marsh Cudweed

Grindelia squarrosa Curlycup Gumweed

Gutierrezia sarothrae Broom Snakeweed

Helianthus maximiliani Maximilian's Sunflower

Heterotheca jonesii Jones Goldenaster

Heterotheca villosa Hairy Goldenaster

Hibiscus trionum Venice Mallow

Hypericum perforatum Common St. Johnswort

Ipomopsis aggregata Scarlet Gilia

Ipomopsis congesta Ballhead Gilia

Linum lewisii Lewis Flax

Lithophragma glabrum Woodland Star

Lomatium dissectum Fernleaf Biscuitroot

Lomatium triternatum Nineleaf Biscuitroot

Lupinus argenteus Pursh Silvery Lupine

Lupinus perennis Perennial Lupine

Machaeranthera canescens Hoary Tansyaster

Mentzelia laevicaulis Smoothstem Blazingstar

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Montia perfoliata Miner's Lettuce

Forbs

Desirable Species (Cont.)

Scientific Name Common Name

Nepeta mussinii Catmint

Oenothera elata Hooker's Evening Primrose

Oenothera pallida Pale Evening Primrose

Onobrychis viciifolia Common Sainfoin

Penstemon acuminatus Sharpleaf Penstemon

Penstemon eatonii Firecracker Penstemon

Penstemon gairdneri Rock Penstemon

Penstemon rydbergii Rydberg's Penstemon

Penstemon speciosus Royal Penstemon

Penstemon strictus Rocky Mountain Penstemon

Penstemon venustus Venus Penstemon

Phacelia hastata Silverleaf Phacelia

Phacelia tanacetifolia Lacy Phacelia

Phlox aculeata Sagebrush Phlox

Phlox hoodii Hood's Phlox

Phlox longifolia Longleaf Phlox

Ranunculus glaberrimus Sagebrush Buttercup

Rorippa amphibia Great Yellowcress

Rudbeckia hirta Black-eyed Susan

Rudbeckia occidentalis Western Coneflower

Solidago canadensis Goldenrod

Sphaeralcea coccinea Scarlet Globemallow

Sphaeralcea grossulariifolia Gooseberry Leaf Globemallow

Sphaeralcea munroana Munro's Globemallow stellaria media Common Chickweed

Symphyotrichum chilense Pacific Aster

Symphyotrichum spathulatum Western Mountian Aster

Thysanocarpus curvipes Sand Fringepod

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Townsendia florifer Townsend Daisy

Forbs

Desirable Species (Cont.)

Scientific Name Common Name

Verbascum blattaria Moth Mullein

Verbascum thapsus Common Mullein

Verbena bracteata Prostrate Vervain

Wyethia amplexicaulis Mule's Ears

Yucca gluaca Yucca Gluaca

Yucca harrimaniae Yucca Harrimaniae

Yucca toftiae Yucca Toftiae

Site Specific Approval Required Species

Scientific Name Common Name

Helianthus annuus Common Sunflower

Typha sp. Cattails

Common Weed Species

Scientific Name Common Name

Alyssum desertorum Desert Madwort

Amaranthus albus Tumble Pigweed

Amaranthus palmeri Pigweed

Amaranthus retroflexus Redroot Pigweed

Amsincka intermedia Fiddleneck

Arctium minus Common Burdock

Armoracia rusticana Horseradish

Capsella bursa-pastoris Shepherd's Purse

Chamaesyce maculata Spotted Spurge

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Chenopodium album Lambsquarters

Chorispora tenella Blue Mustard

Forbs

Common Weed Species (Cont.)

Scientific Name Common Name

Cichorium intybus Chicory

Cirsium vulgare Bull Thistle

Daucus carota Queen Anne's Lace

Descurainia sophia Flixweed

Erysimum repandum Spreading Wallflower

Euphorbia supina Prostrate Spurge

Galium aparine Catchweed Bedstraw

Geranium family Red Stem Filaree

Gnaphalium purpureum Purple Cudweed

Hemizonia pungens Common Tarweed

Ipomoea Morning Glory

Iva xanthifolia Coarse Sumpweed

Lactuca serriola Prickly Lettuce

Lepidium perfoliatum Clasping Pepperweed

Malva neglecta Common Mallow

Matricaria discoidea Pinappleweed

Medicago lupulina Black Medic

Medicago sativa Alfalfa

Oxalis corniculata Creeping Woodsorrel

Plantafo major Broadleaf Plantain

Plantago lanceolata Buckhorn Plantain

Polygonum aviculare Prostrate Knotweed

Portulaca oleracea Purslane

Rumex acetosella Red Sorrel

Rumex crispus Curly Dock

Rumex obtusifolius Broadleaf Dock

Salsola tragus Ragweed

Sisymbrium altissimum Tumble Mustard

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Solanum dulcamara Bittersweet Nightshade

Sonchus oleraceus Sow Thistle

Forbs

Common Weed Species (Cont.)

Scientific Name Common Name

Taraxacum officinale Dandelion

Trifolium reopens White Clover

Urtica dioica Stinging Nettle

Veronica filiformis Slender Speedwell

Invasive Weed Species

Scientific Name Common Name

Ambrosia tomentosa Skeletonleaf Bursage

Bidens frondosa Devil's Beggarticks

Centaurea stoebe Spotted Knapweed

Descurainia pinnata Tansy Mustard

Dipsacus fullonum Teasel

Equisetum arvense Field Horsetail

Equisetum laevigatum Smooth Scouringrush

Kali tragus Russian Thistle

Kochia scoparia Kochia

Lamium amplexicaule Henbit

Lamium purpureum L. Purple Deadnettle

Melilotus officinalis Yellow Sweet Clover

Polygonum persicaria Ladythumb

Ranunculus testiculatus Bur Buttercup

Tragopogon dubius Western Salsify

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Noxious Weed Species

Scientific Name Common Name

Anchusa arvensis (L.) Bieb Small Bugloss

Azolla pinnata R. Brown Feathered Mosquito-Fern

Berteroa incana (L.) DC Hoary Alyssum

Bryonia alba L. White Bryony

Butomus umbellatus L. Flowering Rush

Carduus acanthoides L. Spiny Plumeless Thistle

Carduus nutans L. Musk Thistle

Centaurea diffusa Lam. Diffuse Knapweed

Centaurea solstitialis L. Yellow Starthistle

Centaurea virgata Lam. Squarrose Knapweed

Chondrilla juncea L. Rush Skeletonweed

Cirsium arvense (L.) Scop. Canada Thistle

Conium maculatum L. Poison Hemlock

Convolvulus arvensis L. Field Bindweed

Crupina vulgaris Cass. Common Crupina

Cynoglossum officinale L. Houndstongue

Cytisus scoparius (L.) Link Scotch Broom

Echium vulgare L. Common Viper's Bugloss

Euphorbia esula L. Leafy Spurge

Heracleum mantegazzianum Sommier & Levier Giant Hogweed

Hieracium caespitosum Dumort. Meadow Hawkweed

Hieracium glomeratum Froel. Queen-devil Hawkweed

Hieracium piloselloides Vill. Kingdevil Hawkweed

Hydrocharis morsus-ranae L. European Frog-Bit

Hyoscyamus niger L. Black Henbane

Impatiens glandulifera Royle Himalayan Balsam

Iris pseudacorus L. Yellow Flag Iris

Isatis tinctoria L. Dyer's Woad

Jacobaea vulgaris Gaertn. Tansy Ragwort

Lepidium draba (L.) Desv Hoary Cress

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Noxious Weed Species (Cont.)

Scientific Name Common Name

Lepidium latifolium L. Perennial Pepperweed

Leucanthemum vulgare Lam. Oxeye Daisy

Linaria dalmatica (L.) P. Mill. Dalmatian Toadflax

Linaria vulgaris P. Mill. Yellow Toadflax

Lythrum salicaria L. Purple Loosestrife

Nymphoides peltata (S.G. Gmel.) Kuntze Yellow Floating Heart

Onopordum acanthium L. Scotch Thistle

Pilosella aurantiaca (L.) F. W. Schultz & Sch. Bip. Orange Hawkweed

Reynoutria japonica Sieb. & Zucc. Japanese Knotweed

Reynoutria sachalinensis F. Schmidt ex Maxim. Giant Knotweed

Reynoutria x bohemica Chrtek & Chrtková Bohemian Knotweed

Rhaponticum repens (L.) Hidalgo Russian Knapweed

Salvia aethiopis L. Mediterranean Sage

Salvinia molesta D. S. Mitchell Giant Salvinia

Solanum rostratum Dunal Buffalo Bur

Sonchus arvensis L. Perennial Sowthistle

Shrub Species

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Shrubs

Desirable Species

Scientific Name Common Name

Artemisia cana pursh Silver Sage brush

Artemisia filifolia Sand Sagebrush

Artemisia frigida Willd. Fringed Sagebrush

Artemisia ludoviciana Praire Sage

Artemisia spinescens Bud Sagebrush

Artemisia tridentata Big Basin Sagebrush

Artemisia tridentata nutt. Big Sage Brush

Artemisia tridentata spp. Wyomingensis Wyoming Big Sagebrush

Artemisia tripartita Threetip Sagebrush

Atriplex canescens Fourwing Saltbush

Atriplex confertifolia Shadscale Saltbush

Atriplex hymenelytra Desert Holly

Ceanothus velutinus Snowbrush Ceanothus

Ceratoides lanata Winterfat

Cercocarpus intricatus Littleleaf Mountian Mahogany

Cercocarpus ledifolius Curlleaf Mountian Mahogany

Chamaebatiaria millefolium Fernbush

Chrysothamnus nauseosus Green Rabbitbrush

Chrysothamnus viscidiflorus Yellow Rabbitbrush

Cornus sericea Red Twig Dogwood

Cornus sericea 'Kelseyi' Kelsey's Dwarf Red Twig Dogwood

Dasiphora fruticosa Shrubby Cinquefoil

Ephedra viridis Morman Tea

Ericameria nauseosa Gray Rubber Rabbitbrush

Fallugia paradoxa Apache Plume

Grayia spinosa Spiny Hop Sage

Holodiscus discolor Ocean Spray

Holodiscus dumosus Mountain Spray

Iliamna rivularis Mountain Hollyhock

Mahonia fremontii Fremont's Mahonia

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Desirable Shrubs (Cont.)

Scientific Name Common Name

Mahonia repens Creeping Oregon Grape

Physocarpus opulifolius Common Ninebark

Purshia tridentata Antelope Bitterbrush

Pushia stansburiana Cliffrose

Rhus trilobata Skunkbush Sumac

Ribes aureum Golden Currant

Ribes cereum Wax Current

Rosa woodsii Woods' Rose

Sarcobatus vermiculatus Black Greasewood

Symphoricarpos albus Common White Snowberry

Symphoricarpos oreophilus Mountain Snowberry

Tetradymia glabrata Littleleaf Horsebrush

Scientific Name Common Name

Rubus armeniacus Himalayan Blackberry

Shrub/Tree Species

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Shrub/Trees

Desirable Species

Scientific Name Common Name

Acer glabrum Rocky Mountain Maple

Alnus incana Gray Alder

Amelanchier alnifolia Serviceberry

Amelanchier utahensis Utah Serviceberry

Cercis canadensis Eastern Redbud

Chilopsis linearis Desert Willow

Crataegus douglasii Douglas Hawthorn

Malus x 'Prairifire' Prairifire Crabapple

Philadelphus lewisii Lewis Mock Orange

Prunus virginiana Chokecherry

Quercus bicolor Swamp White Oak

Quercus gambelii Gambel Oak

Rhus glabra Smooth Sumac

Rhus trilobata Nutt. Oakleaf Sumac

Rhus typhina Staghorn Sumac

Salix amygdaloides Peachleaf Willow

Salix bebbiana Bebb Willow

Salix boothii Booth's Willow

Salix drummondiana Drummond Willow

Salix exigua Coyote Willow

Salix geyeriana Geyer Willow

Salix lucida ssp. Lasiandra Pacific Willow

Salix lutea Yellow Willow

Salix matsudana Corkscrew Willow

Sambucus cerulea Blue Elderberry

Shepherdia argentea Silver Buffaloberry

Tree Species

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Trees

Desirable Species

Scientific Name Common Name

Catalpa Catalpa

Celtis reticulata Netleaf Hackberry

Elaeagnus angustifolia Russian Olive

Gleditsia triacanthos Honey Locust

Juniperus occidentalis Western Juniper

Juniperus scopulorum Rocky Mountain Juniper

Platanus x acerifolia London Plane

Populus angustifolia Narrowleaf Cottonwood

Populus balsamifera Balsam Cottonwood

Populus deltoides Eastern Cottonwood

Populus trichocarpa Black Cottonwood

Robinia pseudoacacia Black Locust

Scientific Name Common Name

Ailanthus altissima Tree of Heaven

Ulmus pumila Siberian Elm

Noxious Weed Species

Scientific Name Common Name

Tamarix spp. Salt Cedar