tree selection
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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. - PowerPoint PPT PresentationTRANSCRIPT
TREE SELECTIONPlant 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
Which plant would make the best screen?
Arborvitae Burning Bush
Which plant is the best selection for a soil with a pH of 7.5 – 8?
Pin Oak Northern Pin Oak
Iron chlorosis on Pin Oak growing in high pH soils
Which shrub is the best selection for a shady, moist area?
Summersweet Clethra
‘Sunset’ Weigela
Trees and shrubs with variegated or colored foliage tend to lose variegation or color when grown in the shade.
Which of the two evergreens is the best one to plant in Iowa?
Scotch Pine
Black Hills Spruce
“…the Morton Arboretum does not recommend the species (Scotch Pine) for contemporary landscapes.”
Diplodia tip blight on Pine
Which species is best suited for growth in one of these…?
Red Maple (fall color)
Amelanchier (in flower)
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.
Which of the following Magnolia species has the best chance of surviving in Cedar Rapids, IA?
Magnolia soulangeana Magnolia grandiflora
Magnolia grandidentata is commonly known as Southern Magnolia. It is hardy to zone 6; Magnolia soulangeana is hardy to zone 4.
USDA Plant Hardiness Zone Map
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.
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.
Site Analysis
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
Tree characteristics to consider
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
Lacebark Elm bark
Honeylocust thorns
Green Ash samaras
Malus ‘Red Jewel’
The End