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Xeriscape Gardening - Oklahoma State University
 

Xeriscape Gardening - Oklahoma State University

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Xeriscape Gardening - Oklahoma State University

Xeriscape Gardening - Oklahoma State University

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    Xeriscape Gardening - Oklahoma State University Xeriscape Gardening - Oklahoma State University Presentation Transcript

    • Xeriscape GardeningDepartment of Horticulture & Landscape ArchitectureOklahoma Cooperative Extension Service
    • Xeriscape History• Denver water department - 1978• Reduce irrigation• Based on sound horticultural principles• Also known as water-wise , water TM efficient, watersaver
    • Xeriscape - What is it?• Xeri - scape• Pronounced “zeri-scape” – xeri = dry – scape = vista• Quality landscaping that conserves water and protects the environment.
    • Misconception #1:• Xeriscape means rocks and yucca, or cactus and gravel
    • Misconception #2:• Xeriscape means no lawns.
    • Misconception #3:• Xeriscape means dry landscaping only.
    • Seven fundamentals1. Plan and design2. Consider improving the soil3. Use appropriate plants and zone the landscape4. Create practical turf areas5. Consider using mulches6. Irrigate efficiently7. Maintain the landscape appropriately
    • Plan & Design• Begin with a well- thought-out design
    • Plan & Design• Start with a site analysis . . . – Assess factors that influence water as well as good or bad views
    • Plan & Design• . . . and inventory – Existing structures, trees, shrubs, and turf areas, etc.
    • Plan & Design • Consider- – Budget, – Appearance, – Function, – Maintenance, – Water needs
    • Plan & Design• Refer to local resources
    • Plan & Design
    • Plan & Design
    • Plan & Design• Hard surfaces and the use of heat barriers – Shade – Organic materials – Fences or hedges – Control air movement
    • Improve Soil• Add organic matter to soil of shrub and flower beds – Improves plant health & conserves water • By absorbing and storing water in a form available to plants• Till in 4 inches of organic material• Not practical for trees and grass areas
    • Use Appropriate Plants and Zone Landscape• Use native plants when possible• Well-adapted exotic plants may also be used• Drought tolerant does not mean “plant and forget”
    • Use Appropriate Plants and Zone Landscape • Low water use zones • Moderate water use zones • High water use zones
    • Create Practical Turf Areas• Turf areas should be based on life style, site conditions, and water needs• Traditional turf areas require more water
    • Create Practical Turf Areas• Turfgrasses vary in their need for irrigation – Fescue, bluegrass, ryegrass (use the most water) – Hybrid bermudas like Tifway – Zoysiagrass – Common bermudagrass, U-3 – Buffalograss (uses the least water)
    • Create Practical Turf Areas• Consider: – Reducing the size of water-sensitive lawns through the use of patios, decks, shrub beds and groundcovers – The ease or difficulty of watering the proposed area • Long narrow and small odd-shaped areas are difficult to irrigate efficiently
    • Use MulchesMulch• Conserves soil moisture• Reduces weeds• Prevents soil compaction• Moderates soil temperatures
    • Use Mulches
    • Use Mulches• Organic – Straw, pine needles, bark nuggets, wood chips, sawdust and other wood products• Inorganic – Lava rock, rock, plastic, landscape fabric
    • Irrigate Efficiently• Efficient irrigation systems can save a lot of water• Efficient systems include – Soaker hoses, trickle, drip• Overhead irrigation is inefficient• Zone irrigation systems
    • Irrigate Efficiently• Determine how much water is needed and how often each watering zone needs watering.• Determine how long to water.• Determine how fast to water.
    • Maintain Landscape Properly• Healthy plants are more drought tolerant than weak or damaged plants
    • Maintain Landscape Properly• Proper mowing• Proper fertilizing• Proper pruning• Properly timed pest control• Avoid mechanical damage• Periodic checks of irrigation system
    • Low Water Use Plants• Large trees – Caddo sugar maple – Hackberry – Ginkgo – Kentucky coffeetree – Oaks – Bald cypress – Lacebark elm – Japanese zelkova
    • Low Water Use Plants• Medium trees – Arizona cypress – Eastern red cedar – Chinese pistache – Western soapberry – Cedar elm
    • Low Water Use Plants• Small trees – Shantung maple – Oklahoma redbud – Desert willow – Winterberry euonymus – Pinyon pine
    • Low Water Use Plants• Shrubs - small • Shrubs - medium – Glossy abelia – Rose of Sharon – Deciduous holly – Crape myrtle – Winter jasmine – Shrub roses – Junipers – Sumac – Nandina – Spirea
    • Low Water Use Plants• Shrubs - large – Smoke tree – Crape myrtle – Silverberry elaeagnus – Yaupon holly – Arborvitae – Vitex
    • Low Water Use Plants• Vines – Crossvine – Trumpet vine – Silver lace vine – English ivy – Virginia creeper – Boston ivy – Climbing rose
    • Low Water Use Plants• Groundcovers • Ornamental grasses – Hardy ice plant – Pampas grass – Junipers – Plume grass – Liriope – Maiden grass – Creeping phlox – Japanese silver grass – Stonecrop sedum – Zebra grass – santolina – Giant reed grass – Switch grass – Fountain grass
    • Low Water Use Plants• Perennials – Yarrow – Gaillardia – Wormwood – Gaura – Blue mist spirea – Daylily – Plumbago – Bearded iris – Shasta daisy – Russian sage – Coreopsis – Black-eyed Susan – Coneflower – Autumn sage – Verbena
    • Low Water Use Plants• Annuals – Joseph’s coat – Summer snapdragon – Melampodium – Cockscomb – Cosmos – Mexican heather – Gazania – Gomphrena
    • – Firebush– Madagascar periwinkle– Sunflower– Ornamental sweet potato– Lantana– Pentas– Portulaca/purslane
    • Low Water Use Plants• Annuals – Mexican bush sage – Dusty miller – Purple heart – Marigolds – Mexican sunflower – Zinnia – Mexican zinnia