ISA Best Management Practices

Air Spading

✤ Vertical mulching (soil decompaction)
✤ Trunk flare discovery
✤ Root Pruning (Girdling roots)

Symptoms of Girdling Roots and Compacted Soils:

Reduced Growth: Slower growth rates compared to healthy trees.

Leaf Issues: Smaller, prematurely yellowing, or early dropping leaves.

Thinning Canopy: Less dense, showing signs of stress.

Dieback: Loss of branches, especially in the upper canopy.

Abnormal Trunk Flare: Lack of natural flare at the base of the trunk.

Visible Roots: Roots may be seen encircling or constricting the trunk.

Overall Decline: Increased susceptibility to disease and pests.

Compacted Soils: Difficulty in water and nutrient penetration due to soil compaction

Benefits of Air Spading:

Root Inspection: Non-invasive inspection for root health and structural issues.

Soil Improvement: Aerates compacted soil, enhancing oxygen, water, and nutrient access.

Root Pruning: Safely removes or prunes harmful roots like girdlers.

Disease Management: Early detection and management of root diseases.

Amendments Integration: Direct incorporation of beneficial soil amendments.

Reduces Water Stress: Alleviates water stress by breaking up compacted soil.

Preserves Root Structure: Minimizes damage to roots compared to traditional digging.

Planting

✤ Locating trunk flare
✤ Cutting circling roots
✤ Aftercare

Benefits of Arborist-Planted Trees to ISA BMPs:

Optimal Growth Conditions: Correct depth and site-specific planting for best growth outcomes.

Healthier Trees: Reduced disease and pest issues through superior planting methods.

Stronger Structure: Enhanced stability and wind resistance from robust root and trunk development.

Root Inspection and Correction: Preventative measures taken at planting to ensure long-term tree health.

Reduced Maintenance Costs: Decreased need for future corrective actions due to initial quality planting.

Greater Longevity: Longer living trees provide enhanced environmental and aesthetic benefits.

Cost-Efficiency: Better resource use with improved survival rates, minimizing future expenditures.

Increased Property Value: Enhanced curb appeal and property value through healthy, well-placed trees.

Expertise in Tree Selection: Informed tree choice and placement based on extensive arborist experience.

Symptoms of Improperly Planted Trees:

Planting Depth: Incorrect depth affects root health and overall tree vitality.

Water Stress: Symptoms from inappropriate watering due to poor soil or site conditions.

Increased Pests and Diseases: Higher susceptibility to infestations and diseases from stress.

Root Issues: Constricted root development, often leading to girdling roots from uncorrected planting.

Higher Maintenance Costs: More frequent need for corrective actions and potential for early replacement.

Wrong Tree in the Wrong Place: Increased environmental stress and poor adaptability, leading to conflicts with surroundings.

Structural Pruning

✤ Proper cuts
✤ Structural pruning

Symptoms of Neglecting Pruning/Maintenance in the First 10-15 Years:

Poor Structure: Trees without early pruning from a certified arborist may develop weak or competing leaders and branches that lead to structural vulnerabilities.

Increased Disease and Pest Vulnerability: Lack of maintenance can result in overgrown and dense canopies that harbor pests and diseases.

Reduced Air Circulation: Overcrowded branches reduce air flow within the canopy, increasing moisture retention and the risk of fungal infections.

Lower Aesthetic Appeal: Trees that are not pruned can become unruly and less visually appealing, affecting the overall landscape aesthetics.

Safety Hazards: Unpruned trees might develop weak branches that are prone to breaking, posing risks to safety and property.

Higher Long-term Costs: Neglected trees typically require extensive corrective pruning or early removal due to safety risks or poor health, resulting in significantly higher expenses compared to regular maintenance.

Benefits of Using a Certified Arborist for Pruning During the First 10-15 Years:

✤ Strong Tree Structure: Establish a good branch structure early on, which minimizes the risk of future damage and ensures the tree's long-term health and stability.

✤ Disease Management: Skilled in identifying and removing diseased wood, ensuring the health and longevity of the tree by preventing disease spread.

✤ Improved Growth and Form: Proper pruning encourages the tree to develop a more desirable form and healthier growth patterns.

✤ Enhanced Aesthetic and Property Value: A well-pruned tree enhances the overall look of a property, contributing to higher property values and improved curb appeal.

✤ Safety and Liability Reduction: Regular maintenance by a professional certified arborist reduces the risk of falling branches, protecting property and people from potential harm.