Water Wise Gardening
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Transcript of Water Wise Gardening
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WATERWISE LANDSCAPING
Bill Taylor, University Extension Educator
Weston County Extension OfficeThe University of Wyoming is an equal opportunity/affirmative action institution.
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WHY?•50% of household water consumed by turf and
landscape plants.
•Water demands can be decreased by 30%-80% with proper irrigation practices.
•Seas of “gravel, asphalt, and plastic” create higher temperatures and cooling costs, and damage trees and shrubs.
•Reduces mowing and grass care.
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So, What Is Waterwise Landscaping?
An attractive, sustainable landscape that conserves water and is based on sound horticultural practices.
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SEVEN PRINCIPLES OF WATERWISE
LANDSCAPING
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PLAN & DESIGN COMPREHENSIVELY• View• Slope• Exposure• Soils• Existing
Vegetation• Use
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DESIGN – STEP
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DESIGN – STEP 2
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DESIGN – STEP 3
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DESIGN – STEP
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EVALUATE SOIL AND IMPROVE IF NECESSARY
• Soil test• Do shaping, filling, removal, etc.• Fertilization and/or amendments• Organic matter
– Peat moss– Compost
• Till in fertilizer, amendments, organic matter
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GRADING• Change slopes if
needed to allow water to soak in rather than run off.
• Plants with greatest water need are put where grading provides water.
• Rock gardens work well, but avoid raised beds.
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CREATE PRACTICAL TURF AREAS
• Purpose and function– Children playing, sitting,
soft, comfortable– Ground cover, back lot,
utility– Travel– Shaded, under trees & shrubs (consider no turf here)– Separate and tend (water) these areas individually
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USE APPROPRIATE PLANTS AND GROUP ACCORDING TO WATER
NEEDS
• High water demand (smaller areas)– Kentucky bluegrass, water gardens, succulents,
most annuals, willows, cottonwoods
• Medium water demand– Other cool season grasses, some annuals, many
perennials, many shrubs and trees, native plants
• Low water demand– Warm season grasses, cactus, yucca, some
perennials, some shrubs and trees (pines and junipers) and native plants
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CHOOSE APPROPRIATE GRASSES
• Kentucky bluegrass requires ~40” of water per year - our climate is 1/4 to 1/2 of that in most places.
• Native sod-forming grasses (e.g. western wheatgrass, blue grama, buffalo grass) can thrive here without supplemental water.
• Fescues and crested wheatgrass varieties are other possibilities.
Blue Grama
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LOW WATER DEMAND PLANTS
• Needles instead of leaves• Waxy coating• Deep root system• Alternate regeneration systems• Warm season dormancy
– Ability to surge when moisture occurs
• Often will stay green and add growth throughout the season if moisture continues to be present
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WATER EFFICIENTLY WITH PROPERLY DESIGNED IRRIGATION SYSTEMS
• Group plants and establish watering zones– Each zone is watered according to the
needs and demands of the plants included
• Determine best irrigation method for each zone– Underground sprinkler, hose sprinkler, open
hose, drip irrigation, flood
• Irrigate by need, not byschedule
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WATERING
• Water deep– Turf - 8-12 inches– Trees - 2-3 feet– Use test holes or probe to determine
irrigation time required
• Water just before stress appears– Turf - turns blue-green, leaves tracks– Trees/shrubs - leaf wilt, leaf burning/browning– Learn how often this is for each of your zones
in different kinds of weather
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WATERING (cont.)
• Sprinkling is the least efficient (evaporation) - drip most efficient
• Water in cool of the day - preferably early morning
• Water trees once a week to once a month– Stop watering in September and October to harden-
in for winter– Give another good drink in November if ground
unfrozen– Water during winter whenever temperature is 45°F
or above (especially evergreens)
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USE ORGANIC MULCHES TO REDUCE EVAPORATION
• Bark or wood chips - best• Poorer - straw, sawdust• Only use rock and plastic in non-root areas • Overlay on weed barrier with lawn edging for
best results• Ideal - to drip line of all trees• Under shrubs and ground covers, in flower bed
and gardens
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PRACTICE APPROPRIATE MAINTENANCE
• Proper pruning• Weeding• Fertilization• The higher the water demand in a
zone the more organic matter should be added and maintained– Compost, peat moss, etc.
• Maintain the irrigation system - especially drip and automatic systems
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