WaterWise Plant Choices


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Pictures and information on some of the wide variety of trees, shrubs, perennials, annuals and bulbs that can be used in WaterWise landscapes in Oregon.

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  • Evergreen tree, to 65(100) ft [20(30) m] tall, dense, rounded form.  Bark gray, nearly smooth or finely scaly.  Leaves simple, alternate, ovate to lanceolate, 3-7 cm long, leathery, tip acute, base usually rounded, margin remotely serrate or entire (leaves on juvenile trees may have holly-like teeth), glossy very dark green above, yellowish or whitish tomentose (downy) below; petiole 6-15 mm long.  Fruit (acorn) ovoid, 2-3.5 cm long, about half enclosed by a cup with thin appressed scales. Sun or light shade.  Excellent for seaside gardens.  A good evergreen street tree but so dense it should be thinned to make it more airy and graceful. Hardy to USDA Zone 7      Native to southern Europe and northwest Africa (Mediterranean region), including the several subspecies.  Naturalized in southern England. ilex : Classical name for this tree. Holm: prickly
  • Works for the eastside too
  • Great for the eastside
  • Many other herbs as well
  • WaterWise Plant Choices

    1. 1. Plants for WaterWise Gardening Linda R. McMahan, Horticulturist Oregon State University Extension Service
    2. 2. WaterWise <ul><li>Hundreds of WaterWise plants are available for landscapes </li></ul><ul><li>They include trees & shrubs, perennials, and many other kinds of garden plants </li></ul>http://oregonstate.edu/dept/ldplants/maaq3.htm
    3. 3. Plants for WaterWise Gardening <ul><li>Learn your local climate and rainfall patterns and find your USDA or other growing zone </li></ul><ul><li>Match plants that will require little or no additional water in landscape settings </li></ul><ul><li>Create a pleasing mixture of trees, shrubs, herbaceous plants and groundcovers to complement your existing landscape or to create a new landscape </li></ul>
    4. 4. Examples from Oregon Notice on the following map that precipitation patterns strongly influence different kinds of vegetation in different parts of Oregon
    5. 5. WaterWise Trees <ul><li>Native and nonnative trees provide choices for WaterWise </li></ul><ul><li>They vary from evergreen to deciduous and include many conifers as well as flowering trees </li></ul>Ginkgo ( Ginkgo biloba), a large WaterWise tree . Photo: Neil Bell
    6. 6. The Value of Trees <ul><li>Shade </li></ul><ul><li>Vertical structure for visual effect and to support wildlife </li></ul>Strawberry tree ( Arbutus unedo ), a small WaterWise Tree choice - Photo: Linda McMahan
    7. 7. Quercus garryana, Oregon white oak Photo: Neil Bell WaterWise Trees—A Few Natives A small native tree, Cascara , Rhamnus purshiana  http://oregonstate.edu/dept/ldplants/rhapu1.htm
    8. 8. Cupressus arizonica Cedrus deodara WaterWise Trees Photos: Neil Bell
    9. 9. Picea pungens  Colorado spruce http://www.wsu.edu/~lohr/wcl/ WaterWise Trees Cercis chinensis, Chinese redbud (Photo: Neil Bell)
    10. 10. WaterWise Trees Holly oak ( Quercus ilex ) http://oregonstate.edu/dept/ldplants/quilex.htm
    11. 11. Serviceberry ( Amelanchier arborea ) Photos: Amy Jo Detweiler WaterWise Trees
    12. 12. WaterWise Trees Western larch ( Larix occidentalis ) http://www.malag.aes.oregonstate.edu/wildflowers/images.php/id-1187 Rocky mountain maple (Acer glabrum) http://www.malag.aes.oregonstate.edu/wildflowers/species.php/id-87 http://www.wsu.edu/~lohr/wcl/trees/acerglab/wacglf.gif
    13. 13. WaterWise Shrubs <ul><li>Many shrubs are available </li></ul><ul><li>Choose from a wide variety of native flowering shrubs </li></ul><ul><li>Many native shrubs have attractive named cultivars </li></ul><ul><li>Choose shrubs and subshrubs from Mediterranean areas as other choices </li></ul>Red flowering currant ( Ribes sanguineum), a native Oregon flowering shrub - Photo: Linda McMahan
    14. 14. The Value of Shrubs <ul><li>Eye level </li></ul><ul><li>Shelter & food for birds, butterflies, beneficial insects </li></ul><ul><li>Create the “middle layer” of a vertical landscape </li></ul>Golden currant ( Ribes aureum ), an Oregon native plant for east and westside - Photo: Linda McMahan
    15. 15. Holodiscus discolor, oceanspray WaterWise OR Native Shrubs Philadelphus lewisii, mock orange Garrya elliptica, silk tassel bush Photos: Neil Bell
    16. 16. Ceanothus thyrsiflorus ‘Victoria’ California lilac Photo: Neil Bell WaterWise OR Native Shrubs Sambucus mexicana (caerulea), blue elderberry Photo: Linda McMahan
    17. 17. WaterWise OR Native Shrubs Arctostaphylos patula Photo: Neil Bell Mt. mahogany Cercocarpus ledifolius http://www.malag.aes.oregonstate.edu/wildflowers/species.php/id-920
    18. 18. WaterWise Native Shrubs Purple sage ( Salvia dorii ) http://www.malag.aes.oregonstate.edu/wildflowers/images.php/id-1072 Low Oregon grape (Berberis repens) http://www.malag.aes.oregonstate.edu/wildflowers/images.php/id-11
    19. 19. Artemesia tridentata Photo: Tonie Fitzgerald, WSU Extension WaterWise OR Native Shrubs
    20. 20. Euonymus japonicus (a variegated form) http://oregonstate.edu/dept/ldplants/eujav1.htm   WaterWise Shrubs Early flowering Grevillea rosmarinifolia Photo: Neil Bell
    21. 21. WaterWise Shrubs Cistus x purpureus Photo: Neil Bell Cistus sp. Photo: Linda McMahan
    22. 22. WaterWise Shrubs Holly leaf osmanthus, Osmanthus heterophyllus http://oregonstate.edu/dept/ldplants/oshe.htm Box honeysuckle, Lonicera nitida ‘Baggesen’s Gold’ http://oregonstate.edu/dept/ldplants/lonibg.htm
    23. 23. WaterWise Perennials and “Subshrubs” <ul><li>More perennials are available than of trees and shrubs </li></ul><ul><li>Choose from natives, prairie plants, herbs & other mediterranean plants </li></ul>Helianthemu m, rock rose - Photo: Neil Bell What is a Subshrub? It is perennial like, but dies back each winter to a woody base from which it resprouts.
    24. 24. The Value of Perennials <ul><li>Garden Interest and design element </li></ul><ul><li>Nectar for hummingbirds, butterflies, & insects </li></ul><ul><li>Cut flowers </li></ul>Epilobium canum (Zauchneria californica), California fuschia - Photo: Neil Bell
    25. 25. WaterWise Perennials and Subshrubs Sedum ‘Autumn Joy’ - Photos: Linda McMahan
    26. 26. WaterWise Perennials and Subshrubs Pineleaf Penstemon ( Penstemon pinifolius ) - Photos: Amy Jo Detweiler – Yellow form also available
    27. 27. WaterWise Perennials and Subshrubs Painted daisy (Tanacetum coccineum) Photos: Amy Jo Detweiler
    28. 28. Achillea millefolium. Yarrow (Photo: Linda McMahan) Erysimum ‘ Julian Orchard’, wallflower (Photo: Neil Bell) WaterWise Perennials & Subshrubs
    29. 29. WaterWise Perennials and Subshrubs Senecio cineraria , dusty miller Photo – Neil Bell Echinacea purpurea ‘White Swan’ Photo: Linda McMahan
    30. 30. WaterWise Herbs <ul><li>Herbs from the Mediterranean are a familiar form of herbaceous plant for gardens </li></ul><ul><li>They are also culinary herbs, and may even act as deer repellants </li></ul><ul><li>Avoid lemon balm and fennel which can become invasive in nature </li></ul>Rosmarinus officinalis, rosemary Photo: Neil Bell
    31. 31. Lavendula angustifolia Photo: Linda McMahan Lavendula cultivar Photo: Neil Bell WaterWise Herbs Several kinds of lavendar work well in WaterWise gardens
    32. 32. WaterWise Herbs Salvia chamaedryoides Photo: Neil Bell Chives – Photo: Linda McMahan
    33. 33. WaterWise Herbs From the Michigan State University’s 4-H Children’s Garden Photo: Linda McMahan
    34. 34. WaterWise Herbaceous Plants Native Oregon sunshine ( Eriophyllum lanatum ) http://www.malag.aes.oregonstate.edu/wildflowers/images.php/id-1757 (Inset: Linda McMahan) Showy penstemon ( Penstemon speciosus) http://www.malag.aes.oregonstate.edu/wildflowers/images.php/id-2033
    35. 35. WaterWise Herbaceous Plants Oregon Natives Pearly pussytoes Antennarria anaphaloides Photo: Linda McMahan
    36. 36. WaterWise Herbaceous Plants Oregon Natives Yarrow, Achillea millefolium , native form (Photo: Linda McMahan Columbine, Aquilegia formosa, (Photo: Linda McMahan
    37. 37. WaterWise Herbaceous Plants Oregon Natives Pearly everlasting, Anaphalas margaritacea Photo: Linda McMahan Sword fern, Polystichum munitum – Photo: Linda McMahan
    38. 38. WaterWise Bulbs <ul><li>Most are attractive </li></ul><ul><li>Many are native to Oregon or Mediterranean areas of the world </li></ul><ul><li>Many are already familiar to Oregon gardeners </li></ul>Leucojum aestivum , summer snowflake Photo: Linda McMahan  
    39. 39. Why Bulbs? <ul><li>Nearly all bulbs, except those of tropical origin fit well into WaterWise landscapes </li></ul><ul><li>Withholding most water in the summer months actually aids in bulb survival in our gardens </li></ul>Iris tenax, Oregon iris – Photo: Linda Mcmahan
    40. 40. WaterWise Bulbs Anemone blanda Crocus sp. Photos: Linda McMahan Tulips, Tulipa sp.
    41. 41. WaterWise Bulbs Photos: Linda McMahan Iris ‘Queen Dorothy’ Various Asiatic lilies
    42. 42. WaterWise Bulbs Oregon Natives Douglas’ iris Iris douglasii Photo: Linda McMahan Camas sp. Photo: Neil Bell
    43. 43. WaterWise Annuals Helianthus annuus Sunflower – Photo: Linda McMahan Eschscholzia californica California poppy Photo: Linda Mcmahan Clarkia sp. Photo: Neil Bell
    44. 44. WaterWise Groundcovers <ul><li>Lastly, groundcovers provide help in weed suppression and water retention </li></ul><ul><li>And provide cover for smaller wildlife and beneficial insects </li></ul>Fragaria virginiana, one of our native strawberries Photo: Linda McMahan
    45. 45. WaterWise Groundcovers Fragaria chiloensis, Beach strawberry http://oregonstate.edu/dept/ldplants/frch3.htm Juniperus horizontalis  http://oregonstate.edu/dept/ldplants/juho1.htm Sedum spathulifolium, Photo – Linda McMahan
    46. 46. WaterWise Groundcovers Ceanothus prostratus Kinnickinnick (Arctostaphylos uva-ursi) Photos: Linda McMahan
    47. 47. The End Enjoy your new garden!