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Tree Selection

Tree Selection . Plant Material Maintenance. Why Trees? . Sequester carbon Create ecosystems Make oxygen Create shade Filter pollutants Reduce noise and wind Protect soil from erosion … and they are nice to look at!. Matching the tree to the site.

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Tree Selection

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  1. Tree Selection Plant Material Maintenance

  2. Why Trees? • Sequester carbon • Create ecosystems • Make oxygen • Create shade • Filter pollutants • Reduce noise and wind • Protect soil from erosion • … and they are nice to look at!

  3. Matching the tree to the site

  4. Which plant would make the best screen? Arborvitae Burning Bush

  5. Which plant is the best selection for a soil with a pH of 7.5 – 8? Pin Oak Northern Pin Oak

  6. Iron chlorosis on Pin Oak growing in high pH soils

  7. Which shrub is the best selection for a shady, moist area? ‘Sunset’ Weigela SummersweetClethra

  8. Trees and shrubs with variegated or colored foliage tend to lose variegation or color when grown in the shade.

  9. Which of the two evergreens is the best one to plant in Iowa? Black Hills Spruce Scotch Pine

  10. Diplodia tip blight on Pine “…the Morton Arboretum does not recommend the species (Scotch Pine) for contemporary landscapes.”

  11. Which species is best suited for growth in one of these…?

  12. Amelanchier (in flower) Red Maple (fall color)

  13. Red Maple: • very intolerant of wounding. • requires acid soils. • intolerant of restricted root zones. • Amelanchier: • adapts to urban situations including low soil oxygen. • adapts to restricted root space.

  14. Which of the following Magnolia species has the best chance of surviving in Cedar Rapids, IA? Magnolia soulangeana Magnolia grandiflora

  15. USDA Plant Hardiness Zone Map Magnolia grandidentatais commonly known as Southern Magnolia. It is hardy to zone 6; Magnolia soulangeanais hardy to zone 4.

  16. Acclimation • The gradual process by which a given tree adapts to changes in it’s environment. • Some trees acclimate to the shade by producing larger, thinner leaves.

  17. Microclimate • The climate specific to the actual planting site. • Restricted root zones. • Reflected light and heat from buildings or paved areas. • Exposure to strong winds. • The soil conditions of the site. • Poorly drained, wet soil.

  18. Site Analysis

  19. A site analysis is performed before a landscape plan is designed and installed. • Climate • Hardiness zone; precipitation; light; prevailing winds • Soil • pH; texture; bulk density; CEC; nutrients; volume • Planting site • Surrounding buildings; paved surfaces; utilities • Other plantings • Existing trees/shrubs/flowering plants/turf

  20. Tree characteristics to consider

  21. Consider… • Hardiness • Growth habit • Size • Height • Spread • Root zone requirements • Attributes • Flowers, fruit, bark, etc. • Resistance to insects and diseases • Light requirements • Drought resistance • pH requirements • Salt tolerance

  22. Lacebark Elm bark

  23. Honeylocust thorns

  24. Green Ash samaras

  25. Malus ‘Red Jewel’

  26. The End

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