Native Trees Nuisance / Invasive Shrubs Native or Abies grandis Grand Fir Cytisus scoparius Scotch Broom Arbutus menziesii Madrone Ilex aquifolium English Holly Nuisance? Acer macrophyllum Bigleaf Maple Prunus laurocerasus English / Portuguese Laurel why we care Alnus rubra Red Alder Rhus diversiloba Poison Oak Native Cornus nutallii Pacific Dogwood Nuisance / Invasive Herbaceous Native plants Fraxinus latifolia Oregon Ash Alliaria petiolata Garlic Mustard Native plants are best adapted for long-term and Pinus contorta Shore Pine Buddleia davidii Butterfly Bush success in local soils and growing conditions. Pinus ponderosa* Ponderosa Pine Carduus alanthoides Plumless Thistle Planted in the right location, they thrive with little or no maintenance, generally do not require Invasive Populus trichocarpa Black Cottonwood Carduus baeticus Smooth Distaff Thistle fertilizers or pesticides, and do not require long- Prunus emarginatus Bitter Cherry Carduus lanatus Woolly Distaff Thistle term irrigation. Plants Pseudotsuga menziesii Douglas-Fir Cirsium arvense Canadian Thistle

Quercus garryana Oregon White Oak Cirsiumvulgare Bull Thistle Only native or locally-adapted plants should be planted in Sensitive Lands, including wetlands Rhamnus purshiana Cascara Geranium lucidum Shining Crane's-Bill and stream corridors (RP Districts) and tree Salix fluviatilis Columbia River Willow Geranium robertianum Herb Robert groves (RC Districts). Native plants may not be Salix lasiandra Pacific Willow Hypericum perforatum St. John’s Wort removed from these protected resource areas. Salix scouleriana Scouler's Willow Lythrum salicaria Purple Loosestrife

Salix sitchensis Sitka Willow Vinca major and v. minor Periwinkle / Vinca Every effort has been made to develop a complete list of native plants, but other native or Taxus brevifolius Western Yew Nuisance / Invasive Vines & Grasses naturalized plants may also be acceptable. The City of Lake Oswego Thuja plicata Western Red Cedar Clematis ligusticifolia Western Clematis Planning Department is happy to assist with Tsuga heterophylla Western Hemlock Clematis vitalba Traveler’s Joy / Old Man’s Beard verifying other appropriate plants. Convolvulus sepium Morning Glory * Willamette Valley variety only Hedera - entire genus Ivy, including English Ivy Nuisance / Invasive What’s so bad about invasive plants? They crowd Polygonum sachalinense Giant Knotweed out native plants and don’t provide much habitat City of Lake Oswego Polygonum cuspidatum Japanese Knotweed for wildlife. They can change local ecosystems, Planning Rubus armenicus Himalayan Blackberry resulting in lost diversity and an increase in soil & Building Services Rubus ursinus Trailing Blackberry erosion and disease. www.ci.oswego.or.us Phalaris arundinacea Reed Canarygrass Nuisance and invasive plants may not be planted Ph 503.635.0290 Fx 503.635.0269 Various genera of bamboo Bamboo in Sensitive Lands areas. (This limitation also applies to sub-species and cultivars.) However, 380 A Avenue, 3rdFloor these plants may be manually removed from Post Office Box 369 any area, including resource areas; please Lake Oswego, OR 97034 contact the Planning Department for additional information.

Revised 2/12

Front cover illustration by Zelimir Borzan, used with permission: Bugwood.org Brochure design: Wizmographics.com Lonicera ciliosa Trumpet Vine Native Grasslike: grass, sedge, rush Native and Invasive Plants Lupinus bicolor Two Color Lupine Agrostis exarata Spike Bentgrass These plants are included on Lake Oswego’s Master Plant List, which is referred to in Code Lupinus polyphyllus Bigleaf Lupine Agrostis oregonensis Oregon Bentgrass requirements regarding appropriate plants for landscaping in specific situations (such as areas Lysichitum americanum Skunk Cabbage Agrostis scabra Hair/Rough Bentgrass with a Sensitive Lands designation and the Lake Grove Village Center Overlay). Mimulus guttatus Yellow Monkeyflower Alopecurus aequalis Shortawn Foxtail Native Tall Shrubs / Small Trees Native Herbaceous Flowering Plants Montia parvifolia Little-Leaf Montia Alopecurus geniculatus Water Foxtail

Acer circinatum Vine Maple Achillea millefolium White Yarrow Montia perfoliata Miner’s Lettuce Beckmania syzigachne Slough Grass

Amelanchier alnifolia Western Serviceberry / Saskatoon Achlys triphylla Vanillaleaf Montia siberica Siberian Montia Bromus carinatus Calif./Mountain Brome

Berberis aquifolium Tall Oregon Grape Alisma plantago-aquatica American Water Plantain Oenanthe sarmentosa Water Parsley Bromus sitchensis Alaska Brome

Cornus stolonifera Redosier Dogwood Anaphalis margaritacea Pearly-Everlasting Oxalis organa Oregon Oxalis Bromus vulgaris Columbia Brome

Corylus cornuta Hazelnut Anemone deltoidea Western White Anemone Prunella vulgaris v. Lanceolata Heal-All Carex aperta Columbia Sedge

Crataegus douglasii Douglas Hawthorn Anemone oregana Oregon Anemone Ranunculus occidentalis Western Buttercup Carex densa Dense Sedge

Euonymus occidentalis Western Wahoo Aquilegia formosa Red Columbine Sagittaria lanceolata Wapato Carex deweyana Dewey's Sedge

Holodiscus discolor Oceanspray Arctostaphylos uva-ursi Kinnikinnik Sidalcea campestris Meadow Sidalcea Carex hendersonii Henderson's Sedge

Lonicera involucrata Black Twinberry Asarum caudatum Wild Ginger Smilacina racemosa False Solomon’s Seal Carex obnupta Slough Sedge

Malus fusca Western Crabapple Aster chilensis Hall's Aster Smilacina stellata Star-Flowered Sol’s Seal Carex stipata Sawbeak Sedge

Oemleria cerasiformis Indian Plum Brodiaea congesta Northern Saitas Sparganium emersum v. Emersum Simplestem Burr-Reed Deschampsia caespitosa Tufted Hairgrass

Philadelphus lewisii Mockorange Brodiaea coronaria Harvest Brodiaea Strepropus amplexifolius Clasping-Leaf Twisted Stalk Eleocharis ovata Ovoid Spike-Rush

Physocarpus capitatus Pacific Ninebark Brodiaea howellii Howell's Brodiaea Tellemia grandiflora Frindgecup Eleocharis palustris Common Spike-Rush

Prunus virginiana Chokecherry Brodiaea hyacintha Hyacinth Brodiaea Tolmiea menziesii Piggyback Plant Elymus glaucus Blue Wildrye

Ribes sanguineum Red-Flowering Currant Calypso bulbosa Fairy Slipper Trientalis latifolia Western Starflower Festuca idahoensis Bunchgrass Fescue

Rosa gymnocarpa Baldhip Rose Camassia leichtlinii Leichtlin's Camas Trillium chloropetalum Giant Trillium Festuca occidentalis Western Fescue

Rosa nutkana Nootka Rose Camassia quamash Common Camas Trillium ovatum Western Trillium Festuca rubra Red Fescue

Rosa pisocarpa Clustered Wild Rose Campanula scouleri Scouler’s Bellflower Urtica diocia Stinging Nettle Glyceria occidentalis Western Mannagrass

Rubus parviflorus Thimbleberry Cornus canadensis Bunchberry Vancouvria hexandra White Inside-Out Flower Hierocloe occidentalis California Sweetgrass

Rubus spectablilis Salmonberry Cryptantha intermedia v. Grandiflora Common Forget-Me-Not Veratrum viride False Hellebore Hordeum brachyantherum Meadow Barley Sambucus cerulea Blue Elderberry Cynoglossum grande Pacific Hound’s-Tongue Viola andunca Early Blue Violet Juncus balticus Baltic Rush

Sambucus racemosa Red Elderberry Disporum hookeri Hooker Fairy-Bell Viola glabella Streambank Violet Juncus effusus Common (Soft) Rush

Spiraea douglasii Douglas Spiraea Disporum smithii Fairy Lantern Viola sempervirens Evergreen Violet Juncus ensifolius Daggerleaf Rush Symphoricarpos albus Snowberry Eriophyllum lanatum Woolly Sunflower Native Ferns Juncus tenuis Slender Rush Vaccinium parvifolium Red Huckleberry Erythronium oregonum Giant Fawn Lily Adiantum pedantum Northern Maidenhair Fern Leersia oryzoides Rice Cutgrass

Vaccinium ovatum Evergreen Huckleberry Fragaria vesca Wild Strawberry Athyrum felix-femina LadyFern Scirpus acutus Hardstem Bulrush Native Low Shrubs Fragaria virginiana Virginia Strawberry Blechnum spicant Deer Fern Scirpus microcarpus Small-Flowered Bulrush Berberis (mahonia) nervosa Low Oregon Grape Geum macrophyllum Oregon Avens Gymnocarpium dropteris Oak Fern Scirpus validus Softstem Bulrush

Gaultheria shallon Salal Heracleum lanatum Cow-Parsnip Polypodium glycyrrihiza Licorice Fern Typha latifolia Common Cattail

Rubus leucodermis Blackcap Hydrophyllum tenuipes Pacific Waterleaf Polystichum munitum Sword Fern

Iris tenax Oregon Iris Pteridium aquilinum Bracken Fern

Lilium columbianum Columbia Lily Thelypteris nevadensis Wood Fern