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What Do People See When They Look At Trees ?. Randall H. Zondag OSU Extension –Lake County Commercial Horticulturist. Information on this Program. My Website : http//lake.osu.edu Links Weather stations Pest Management Informations Programs. Are They Listening ?.
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What Do People See When They Look At Trees ? Randall H. Zondag OSU Extension –Lake County Commercial Horticulturist
Information on this Program • My Website : http//lake.osu.edu • Links Weather stations Pest Management Informations Programs
Are They Listening ? Alan preaching to his flock
What Do Plants Fail To Grow? • Poorly Grown Plants • Poorly Cared For Plants (on site, transported) • Poorly Plants (to deep, poor soil, poor drainage, compact soils, wrong place) • Poor maintenance ( mulch, fertilizer, pruning, pest control )
2003 SGR Survey of Ohio Diameter Breakdown Size % 2 17.5 3 13.9 4 7.7 39.1 5 4.7 6 5.0 7 4.1 8 4.1 9 2.6 59.6 <20 85.11 n=27,158
Developing a Urban Forest • Where do trees belong ? • Problems trees cause • So why do we plant them? • Trees are a commitment
Where Do Trees Belong ? If We are Growing Trees to Maturity How much Space do They Need to Grow ? • Surface Area
Surface Area • Since most of our actively growing roots are in the top 8 plus inches how much surface area do we need ? 20 100 250 500 1000
Surface Area • Since most of our actively growing roots are in the top 8 plus inches how much surface area do we need ? 1000 Whole about 32 ft square
Why • Area for healthy root growth • Absorb water and nutrients • Properly anchored • Area to grow up in
Air Water Nutrients Room To Grow Drainage
Where Do Trees Belong ? If We are Growing Trees to Maturity How much Space do They Need to Grow ? • Surface Area • Soil Volume
Soil Volume Crown (ft2) 1200/24 900/20 640/16 480/12 320/8 140/4 Diameter(in) • 400 600 800 1000 1200 1400 1800 • soil volume required (ft3)
Soil Volume – 12 inch tree Crown (ft2) 1200/24 900/20 640/16 480/12 320/8 140/4 Diameter (in) • 400 600 800 1000 1200 1400 1800 • soil volume required (ft2)
Soil Volume – 16 inch Crown (ft2) 1200/24 900/20 640/16 480/12 320/8 140/4 Diameter (in) • 400 600 800 1000 1200 1400 1800 • soil volume required (ft2)
Soil Volume -20 inch Crown (ft2) 1200/24 900/20 640/16 480/12 320/8 140/4 Diameter (in) • 400 600 800 1000 1200 1400 1800 • soil volume required (ft2)
What is the Composition of that Soil ? • Proper pH • Organic Matter -2-5% (no OM deep ) • Proper drainage • Proper nutrient levels
SOIL: From the Ground, Up! Soil Profile: it looks like a layer cake
Where Do Trees Belong ? If We are Growing Trees to Maturity How much Space do They Need to Grow ? • Surface Area • Soil Volume • Utilities
Where Do Trees Belong ? If We are Growing Trees to Maturity How much Space do They Need to Grow ? • Surface Area • Soil Volume • Utilities • Hazards
Where Do Trees Belong ? If We are Growing Trees to Maturity How much Space do They Need to Grow ? • Surface Area • Soil Volume • Utilities • Hazards • Improvements
So Why Do We Plant Trees? • Shade
So Why Do We Plant Trees? • Shade • Create desired environment (green = green)
So Why Do We Plant Trees? • Shade • Create desired environment (green = green) • Quiet
So Why Do We Plant Trees? • Shade • Create desired environment (green = green) • Quiet • Storm Water Issues
One mature tree reduces stormwater runoff by over 1,000 gallons per year.
So Why Do We Plant Trees? • Shade • Create desired environment (green = green) • Quiet • Storm Water Issues • Carbon Sequestering
How Old Does a Tree Have to be Before it Has a Positive Effect on Carbon Sequestering ? 10 inches in diameter or about 30 years of age It is estimated that a tree will sequester about 1 plus ton of carbon in 90 years
Container Plants • Grown in artifical media • Rapid root growth • Depth of planting • Soils different than the planting site • Dries out fast • Need to fertilizer often
Field Grown ( B&B) • Grown in native soils • Roots are cut with shovels • The ball is covered with burlap • Up to 80+ percent of the root system can be removed
Know Your Supplier 1 ¾” hackberry, 18” balls: all with 8 – 13” of soil over first main order roots
How Deep Should You Plant ? • So the flare of the plant is at the surface How Big Should The Hole Be? • Three times larger than the ball • Only as deep as the ball so the flare is at the surface • No topsoil should be added to the site Why?