Department of Horticulture

Hardy Plants for Waterwise Landscapes

A-Z Index

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Common name

Scientific name

Plant type

Amur maackia Maackia amurensis Tree
Apple serviceberry Amelanchier laevis (×grandiflora) Tree
Austrian pine Pinus nigra Tree
Basket-of-gold Aurinia saxatilis Perennial
Beach strawberry Fragaria chiloensis N Groundcover
Beardtongue Penstemon spp. N@ Perennial
Beauty bush Kolkwitzia amabilis Shrub
Bellflower Campanula spp. ●N@ Perennial
Bergenia Bergenia spp. ● Perennial
Birchleaf spirea Spiraea betulifoliaN@ Shrub
Bird's nest spruce Picea abies 'Nidiformis' Shrub
Bishop's hat Epimedium spp. ● Groundcover or perennial
Blanket flower Gaillardia pulchella Annual
Blanketflower Gaillardia spp. N Perennial
Blue fescue Festuca ovina var. glauca ●@ Grass
Blue flax Linum perenne N@ Perennial
Blue oat grass Helictotrichon sempervirens ●@

Grass

Blue spirea Caryopteris x clandonensis ●@ Shrub
Border privet Ligustrum obtusifolium Shrub
Bosnian pine Pinus leucodermis
Tree
Boston ivy Parthenocissus tricuspidata Vine
Bristlecone pine Pinus aristata Tree
Buckwheat Eriogonum umbellatum N Groundcover or perennial
Bur oak Quercus macrocarpa Tree
Burkwood daphne Daphne ×burkwoodii Shrub
Burkwood viburnum Viburnum ×burkwoodii Shrub
Burning bush Euonymus alatus Shrub
Bush cinquefoil Dasiphora fruticosa N Shrub
Bush honeysuckle Diervilla sessilifolia Shrub
Bush zinnia Melampodium paludosum Annual
California incense cedar Calocedrus decurrens ●@ Tree
California poppy Eschscholzia californica @ Annual
Callery pear Pyrus calleryana Tree
Camas Camassia spp. Bulb
Canyon maple Acer grandidentatum N Tree
Catalpa Catalpa spp. Tree
Cherry laurel Prunus laurocerasus Shrub
Colorado spruce Picea pungens N Tree
Columbine Aquilegia spp.N@ Perennial
Common privet Ligustrum vulgare Shrub
Common snowdrop Galanthus nivalis  Bulb
Coralbells Heuchera spp. ●N Perennial
Cork tree Phellodendron sp. Tree
Cosmos Cosmos spp. @ Annual
Coyote willow Salix exigua N Shrub
Cranberry cotoneaster Cotoneaster apiculatus @ Shrub
Creeping baby's breath Gypsophila repens Groundcover
Creeping germander Teucrium canadense Groundcover
Creeping juniper Juniperus horizontalis Groundcover
Creeping mahonia Mahonia repensN Groundcover
Creeping zinnia Sanvitalia procumbens Annual
Crimson pincushion flower Knautia macedonica Perennial
Crocus Crocus spp.
Bulb
Crown imperial Fritillaria imperialis ●  Bulb
Cupid's dart Catananche caerulea Perennial
Daffodil Narcissus spp. Bulb
Daylily Hemerocallis spp. Perennial
Dusty miller Senecio cineraria Annual
English oak Quercus robur Tree
European mountain ash Sorbus aucuparia Tree
Evergreen candytuft Iberis sempervirens Perennial
Feather reed grass Calamagrostis ×acutiflora 'Karl Foerster' Grass
Feathertop grass Pennisetum villosum Grass
Fernbush Chamaebatiaria millefolium N Shrub
Fireglow spurge Euphorbia griffithii 'Fireglow' Perennial
Firethorn Pyracantha coccinea Shrub
Flowering quince Chaenomeles spp. ●@ Shrub
Fly honeysuckle Lonicera xylosteum Shrub
Forsythia Forsythia spp. Shrub
Foxtail lily Eremurus stenophyllus Perennial
Fragrant snowball viburnum Viburnum ×carlcephalum Shrub
Gayfeather Liatris spp. Perennial
Gazania Gazania spp. Annual
Germander Teucrium chamaedrys Perennial
Ginkgo Ginkgo biloba
Tree
Globe amaranth Gomphrena globosa Annual
Globe daisy Globularia spp. Groundcover or perennial
Gloriosa daisy Rudbeckia spp. Perennial
Glory-of-the-snow Chionodoxa spp. @ Bulb
Godetia Clarkia amoena N Annual
Golden clematis Clematis tangutica Vine
Golden currant Ribes aureum N Shrub
Goldenrain tree Koelreuteria paniculata Tree
Grape hyacinth Muscari spp. Bulb
Grape vine Vitis vinifera Vine
Greater woodrush Luzula sylvatica Groundcover
Grecian windflower Anemone blanda Bulb
Green ash Fraxinus pennsylvanica Tree
Hardy geranium Geranium spp. ●@ Perennial
Hardy Jerusalem sage Phlomis russeliana Perennial
Hawthorn Crataegus spp. N Tree
Hedge cotoneaster Cotoneaster lucidus ●@ Shrub
Hen and chicks Sempervivum spp. Perennial
Hoptree Ptelea trifoliata Tree
Hyacinth Hyacinthus orientalis Bulb
Hypericum Hypericum spp. ● Shrub
Iris Iris spp. N Perennial
Ironwood Ostrya virginiana Tree
Japanese barberry Berberis thunbergii Shrub
Japanese kerria Kerria japonica Shrub
Japanese pagoda tree Styphnolobium japonicum (Sophora japonica) Tree
Japanese spirea Spiraea japonica Shrub
Japanese tree lilac Syringa reticulata Shrub
Juniper Juniperus spp. N Shrub
Jupiter's beard Centranthus ruber Perennial
Kentucky coffee tree Gymnocladus dioica Tree
Kinnikinnick Arctostaphylos uva-ursiN Groundcover
Kittentails Synthyris missurica N Perennial
Korean barberry Berberis koreana Shrub
Korean fir Abies koreana Tree
Lacebark elm Ulmus parvifolia Tree
Lady's mantle Alchemilla mollis ●@ Perennial
Lamb's ears Stachys byzantina Groundcover or perennial
Lantana Lantana spp. ● Annual
Lavender Lavandula angustifolia @ Perennial
Lavender cotton Santolina chamaecyparissus Perennial
Lenten rose Helleborus orientalis ●@ Perennial
Leyland cypress XCupressocyparis leylandii
Tree
Lilac Syringa spp. ● Shrub
Lily Lilium spp. Bulb
Limber pine Pinus flexilisN
Tree
Maiden grass Miscanthus sinensis 'Morning Light' ●@ Grass
Mallow Lavatera trimestris Annual
Mallow ninebark Physocarpus malvaceus N Shrub
Mexican sunflower Tithonia rotundifolia Annual
Moor grass Seslaria spp. ● Grass
Morning glory Ipomoea spp. Annual
Moss rose Portulaca grandiflora Annual
Mountain avens Dryas octopetala N Groundcover
Nasturtium Tropaeolum majus Annual
Netleaf hackberry Celtis reticulata
Tree
Netted iris Iris reticulata  Bulb
Nippon spirea Spiraea nipponica Shrub
Nodding onion Allium cernuum Bulb
Nootka rose Rosa nutkana N Shrub
Ocean spray Holodiscus discolor N Shrub
Orange honeysuckle Lonicera ciliosa
Vine
Oregon boxwood Paxistima myrsinites N Shrub
Oregon grape Mahonia aquifolium N@ Shrub
Oriental poppy Papaver orientale @ Perennial
Paperbark maple Acer griseum Tree
Pasque flower Pulsatilla vulgaris @ Perennial
Peony Paeonia spp. N Perennial
Petunia Petunia ×atkinsiana Annual
Pink Dianthus spp. Perennial
Plantain lily Hosta spp. ● Perennial
Poppy Papaver spp. @ Annual
Prairie smoke Geum triflorum @ Perennial
Purple coneflower Echinacea purpurea ●@ Perennial
Pussytoes Antennaria spp. N Groundcover
Rabbitbrush Ericameria (Chrysothamnus) nauseosus N Shrub
Red oak Quercus rubra Tree
Red wood spurge Euphorbia amygdaloides 'Rubra' ●@ Perennial
Red chokeberry Photinia (Aronia) arbutifolia Shrub
Redleaf rose Rosa rubrifolia ●@ Shrub
Redosier dogwood Cornus sericea N Shrub
Rock clematis Clematis columbiana N
Vine
Rockspray cotoneaster Cotoneaster horizontalis Groundcover
Rocky Mountain maple Acer glabrumN Tree
Rocky Mountain juniper Juniperus scopulorum N Tree
Rugosa rose Rosa rugosa Shrub
Russian arborvitae Microbiota decussata Groundcover
Russian sage Perovskia atriplicifolia Perennial
Sage Salvia spp. @ Perennial
Sagebrush/Wormwood Artemisia spp. N Shrub
Scarlet oak Quercus coccinea Tree
Sea lavender Limonium gerberi (latifolium) Perennial
Sea pink Armeria maritima N@ Perennial
Sedum Sedum spp. ● Perennial
Serbian spruce Picea omorika Tree
Siberian peashrub Caragana arborescens Shrub
Signet marigold Tagetes tenuifolia Annual
Silver linden Tilia tomentosa Tree
Smoke tree Cotinus coggygria Tree
Snowberry Symphoricarpos spp. ●N@ Shrub
Snowbrush ceanothus Ceanothus velutinus N
Shrub
Snow-in-summer Cerastium tomentosum Groundcover
Species tulip Tulipa batalinii Bulb
Spider flower Cleome hasslerana Annual
Squill Scilla spp. ●@ Bulb
St. John's wort Hypericum calycinum Groundcover
Staghorn sumac Rhus typhina Tree
Statice Limonium sinuatum
Annual
Stonecrop Sedum spp. ●N Groundcover
Strawflower Helichrysum bracteatum
Annual
Subalpine fir Abies lasiocarpa N Tree
Sunflower Helianthus annuus N@ Annual
Sunrose Helianthemum nummularium Perennial
Sweet alyssum Lobularia maritima Annual
Swiss stone pine Pinus cembra Tree
Switch grass Panicum virgatum Grass
Tatarian maple Acer tataricum Tree
Thornless honeylocust Gleditsia triacanthos Tree
Threadleaf coreopsis Coreopsis verticillata Perennial
Three leaf sumac Rhus trilobata N Shrub or groundcover
Thunberg spirea Spiraea thunbergii Shrub
Thyme Thymus spp. Groundcover
True mountain mahogany Cercocarpus montanus N Shrub
Trumpet vine Campsis radicans Vine
Tufted fleabane Erigeron caespitosus N@ Perennial
Tulip Tulipa spp. Bulb
Turkish speedwell Veronica liwanensis Groundcover
Vanhoutte spirea Spiraea ×vanhouttei Shrub
Verbena Glandularia ×hybrida Annual
Virginia creeper Parthenocissus quinquefolia Vine
Water birch Betula occidentalisN
Tree
Wayfaring tree Viburnum lantana Shrub
Western juniper Juniperus occidentalis N Tree
Western serviceberry Amelanchier alnifoliaN Tree
Western white clematis Clematis ligusticifolia Vine
Western yellow pine Pinus ponderosa N Tree
Western ninebark Physocarpus capitatus N Shrub
White fir Abies concolor N Tree
White wood aster Eurybia divaricata● (Aster divaricatus) Perennial
Wild mockorange Philadelphus lewisii N Shrub
Wild ginger Asarum caudatumN
Groundcover
Wineleaf cinquefoil Potentilla tridentata Groundcover
Winter currant Ribes sanguineumN Shrub
Wintercreeper euonymus Euonymus fortunei Vine
Wisteria Wisteria spp. Vine
Wooly veronica Veronica pectinata Groundcover
Yarrow Achillea spp. N@ Perennial
Yellow comfrey Symphytum grandiflorum Groundcover or perennial
Yellow corydalis Corydalis lutea ●@ Perennial
Yellowwood Cladrastis kentukea Tree
Yew Taxus spp. ●N Shrub
Yucca Yucca spp. Shrub

 

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Scientific and common names are listed for each plant.  Plants are listed in alphabetical order.

If the scientific name has a link, it leads to a page with photos and cultural information. If the common name has a link, it leads to photos, but not to cultural information. 


Key to symbols

spp. = More than one species is water-conserving

● = Suitable for dry shade; amount of shade varies

N = Native to Washington or Idaho

@ = May reseed or spread

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