At Bartlett's Research Lab, we produce technical reports that lead the industry in depth of knowledge on a variety of areas of importance to tree and shrub care. Browse our technical reports below.
Technical Reports
- Air Pollution Injury
- Air Pollution Ozone
- Algal Leafspot
- Alternates to Flowering Dogwood
- Ambrosia Beetles
- American Holly: Plant Health Care Recommendations
- Anthracnose
- Apple: Plant Health Care Recommendations
- Arborvitae Leafminer
- Armillaria Root Rot
- Ash Yellows
- Asian Longhorned Beetle
- Austrian Pine: Plant Health Care Recommendations
- Autumn Color
- Azalea & Rhododendron: Plant Health Care Recommendations
- Bacterial Leaf Scorch
- Bagworm
- Bamboo Management
- Beech Leaf Disease
- Beech: Plant Health Care Recommendations
- Bermudagrass
- Biochar FAQ
- Biochar: A Game-Changer for Soils
- Biological Control
- Birch Leafminer
- Black Canker and Scab of Willow
- Black Root Rot
- Black Twig Borer
- Black Vine Weevil
- Blue Oak: Plant Health Care Recommendations
- BOOST® Fertilization
- Boron Toxicity
- Boxelder Bug
- Boxwood Blight
- Boxwood Leafminer
- Boxwood Varieties Resistant to Boxwood Blight
- Boxwood: Plant Health Care Recommendations
- Bronze Birch Borer
- Brown Marmorated Stink Bug
- Brown Rot
- Brown Spot Needle Blight
- Bur Oak Blight
- Camellia: Plant Health Care Recommendations
- Campus Tree Management
- Cankerworms
- Cavity Filling
- Centipedegrass
- Cherry Bark Tortrix
- Citrus: Plant Health Care Recommendations
- Coast Live Oak: Plant Health Care Recommendations
- Common Oak Scales
- Compartmentalization of Decay in Trees
- Conifer Care
- Cottony Camellia Scale
- Crabapple Diseases and Pests
- Crabapple: Plant Health Care Recommendations
- Crapemyrtle Bark Scale
- Cynipid Gall Wasps on Oak
- Cytospora Canker of Spruce
- Decay Considerations In Pruning
- Declining Trees: Plant Health Care Recommendations
- Deer Resistant Herbaceous Plants
- Defoliation on Shade Trees
- Delving Into Biochar
- Determining Change of Lean
- Diagnosing Phytophthora on Landscape Ornamentals
- Dieback and Decline
- Diplodia Tip Blight
- Disease Resistant Elm Selections
- Dogwood Anthracnose
- Dogwood: Plant Health Care Recommendations
- Dothistroma Needle Blight of Pines
- Douglas-fir Beetle
- Drought and Landscape Plants
- Dutch Elm Disease
- Eastern White Pine Cultural Problems and Decline
- Elm: Plant Health Care Recommendations
- Elongate Hemlock Scale
- Emerald Ash Borer
- Emerging Pests of Arbutus
- Entomosporium Leaf Spot
- European Hornet
- Evergreen Pear: Plant Health Care Recommendations
- Excising Bark Tissue
- Factors of Oak Decline
- Fall Webworm
- FAQs About Pesticide Applications
- Fire Ant Facts Technical Report
- Fireblight Technical Report
- Flowering Cherries: Plant Health Care Recommendations
- Flowering Dogwood Disorders
- Forest Tent Caterpillar
- Formosan Subterranean Termite
- Fresh Wood Chip Mulch
- Fusarium Wilt of Palms
- Ganoderma Butt Rot
- Gas Injury
- Girdling Roots
- Gloomy Scale on Maple
- Green Ash: Plant Health Care Recommendations
- Growing Degree Days
- Growth Regulation of Shrubs Commercial
- Growth Regulation of Shrubs Residential
- Growth Regulation of Trees Commercial
- Growth Regulation of Trees Residential
- Gypsy Moth
- Gypsy Moth Host Preferences
- Hawthorn Rust Diseases
- Hawthorn: Plant Health Care Recommendations
- Hedge Pruning
- Hemlock Rust Mite
- Hemlock Woolly Adelgid
- Hemlock: Plant Health Care Recommendations
- Holly Leaf and Twig Blight
- Honeylocust: Plant Health Care Recommendations
- Hydrangea Culture and Care
- IPM for Landscape Plants
- IPM of Clearwing Borers
- Iron Deficiency
- Irrigation
- Italian Cypress: Plant Health Care Recommendations
- Ivy on Trees
- Japanese Beetle
- Japanese Black Pine: Plant Health Care Recommendations
- Japanese Holly: Plant Health Care Recommendations
- Japanese Knotweed
- Japanese Maple Scale
- Japanese Maple: Plant Health Care Recommendations
- Juniper Tip Blight
- Juniper: Plant Health Care Recommendations
- Keithia Blight
- Lacebugs
- Landscape Protection from Boxwood Blight
- Landscape Tree Recommendations for the Eastern United States
- Laurel Wilt
- Laurel Wilt (West Coast)
- Lethal Bronzing of Palm
- Lichen and Trees
- Lightning Protection
- Lightning Protection FAQ
- Lightning Protection Fuses
- London Plane Tree: Plant Health Care Recommendations
- Madrone Canker
- Magnolia Scale
- Managing Mature Trees
- Managing Oak Wilt Disease
- Managing Trees in Severe Drought
- Mature Trees: Plant Health Care Recommendations
- Mealybugs on Taxus
- Micronutrient Deficiencies
- Mimosa Wilt
- MoniTor® Rx IPM Program
- Monterey Pine: Plant Health Care Recommendations
- Mountain Laurel: Plant Health Care Recommendations
- Mulch Application Guidelines
- Mycorrhizal Inoculation
- Needle Diseases of Conifer
- Norway Maple: Plant Health Care Recommendations
- Oak Leaf Skeletonizer
- Oak Leafroller Technical Report
- Obscure Scale
- Olive Knot
- Optimum Soil pH Ranges
- Pear Thrips
- Pear Trellis Rust
- Pecan: Plant Health Care Recommendations
- Periodical Cicadas
- Pests of Pines
- Phytophthora Canker
- Phytophthora Root and Collar Disease
- Phytophthora Root and Collar Disease with Lists
- Pieris: Plant Health Care Recommendations
- Pin Oak: Plant Health Care Recommendations
- Pinewood Nematode
- Pittosporum Decline
- Potassium Deficiency in Palm
- Potassium Phosphite
- Powdery Mildew on Dogwood
- Powdery Mildew Technical Report
- Preparing a Shade Garden
- Prevencion de la Transmision de Boxwood Blight
- Preventing Construction Damage to Trees
- Preventing Grade Change Damage to Trees
- Prop System Installation
- Prop Systems
- Pruning Standard to Maintain Landscape Trees
- Red Maple: Plant Health Care Recommendations
- Red Oak: Plant Health Care Recommendations
- Redbud: Plant Health Care Recommendations
- Relative Tolerance of Tree Species to Construction Damage
- Resistance Recording Drills for Decay Assessment
- Role of Nutrients
- Root Collar Disorders
- Root Invigoration Program
- Root Invigoration Program Before and After Care
- Root Invigoration™ for Landscape Architects and Contractors
- Root Pruning
- Rose Rosette Disease
- Rose: Plant Health Care Recommendations
- Salt Injury on Ornamentals
- Salt Recovery Program
- Sanitation Prevention of Boxwood Blight Transmission
- Sapsucker Damage and Management
- Saving Storm-Damaged Trees
- Scale Insects Technical Report
- Seiridium Canker
- Shot-hole Disease of Flowering Cherry
- Shrubs for Poorly Drained Soil
- Sidewalk Repair Near Trees
- Small Tree Support Systems
- Small Trees Under Utility Lines
- Soil Density
- Soil Drainage
- Soil for Urban Tree Planting
- Sonic Tomography
- Southern Magnolia: Plant Health Care Recommendations
- Southern Pine Beetle
- Spanish Moss Management
- Spider Mites
- Spotted Lanternfly
- Spruce Bud Scale
- Spruce Gall Adelgid
- St. Augustinegrass
- Starch Analysis
- Storm-Related Salt Injury
- Structural Pruning of Young Trees
- Sugar Maple: Plant Health Care Recommendations
- Summary of Needlecast and Needle Blight Diseases
- Sycamore Borer
- Taxus Disorders
- Taxus: Plant Health Care Recommendations
- Tea Scale
- Tensiometer Installation
- Tensiometers in Landscape Plantings
- Tensiometers in Landscape Plantings
- Tent Caterpillars
- The Secret Lore of Trees
- Thousand Cankers Disease
- Ticks
- Transplanting Using AirSpade
- Tree and Shrub Fertilization Near Waterways
- Tree Planting Concepts
- Tree Support Systems
- Trees for Alkaline Soil
- Trees for Poorly Drained Soil
- Tubakia Leaf Spot
- Tuliptree Scale
- Two-Lined Chestnut Borer
- Two-Lined Chestnut Borer
- Understanding Prescription Fertilization
- Vent Installation
- Verticillium Wilt
- Verticillium Wilt Resistant Species
- Viburnum Leaf Beetle
- Viburnum Leaf Beetle
- Vista Pruning
- Wax Scales
- Weir's Cushion Rust of Spruce
- What to Look for When Hiring a Tree Care Company
- White Pine: Plant Health Care Recommendations
- White-barked Birch: Plant Health Care Recommendations
- Why Fertilize Landscape Trees?
- Willow-Conifer Rust
- Winter Injuries on Landscape Plants
- Winter Injuries on Landscape Plants
- Winter Moth
- Winter Moth
- Young Established Trees
- Young Trees: Plant Health Care Recommendations
- Zoysiagrass