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 Elm: Plant Health Care Report
- American Holly: Plant Health Care Report
- Anthracnose
- Apple: Plant Health Care Report
- Arborvitae Leafminer
- Armillaria Root Rot
- Ash Yellows
- Asian Longhorned Beetle Technical Report
- Austrian Pine: Plant Health Care Report
- Autumn Color
- Azalea & Rhododendron: Plant Health Care Report
- Bacterial Leaf Scorch
- Bagworm
- Bamboo Management
- Bartlett's Root Invigoration
- Bartlett's Root Invigoration Before and After Care
- Bartlett's Root Invigoration for Landscape Architects and Contractors
- Beech Leaf Disease
- Beech: Plant Health Care Report
- Bigleaf Hydrangea: Plant Health Care Report
- 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
- BOOST® Fertilization
- Boron Toxicity
- Boxelder Bug
- Boxwood Blight Technical Report
- Boxwood Leafminer
- Boxwood Varieties Resistant to Boxwood Blight
- Boxwood: Plant Health Care Report
- Bronze Birch Borer
- Brood X Periodical Cicadas
- Brown Marmorated Stink Bug
- Brown Rot
- Brown Spot Needle Blight
- Bur Oak Blight
- California Privet: Plant Health Care Report
- Camellia: Plant Health Care Report
- Campus Tree Management
- Cankerworms
- Cavity Filling
- Cherry Bark Tortrix
- Citrus: Plant Health Care Report
- Common Oak Scales
- Compartmentalization of Decay in Trees
- Conifer Care
- Cottony Camellia Scale
- Crabapple Diseases and Pests
- Crabapple: Plant Health Care Report
- Crape Myrtle Bark Scale
- Cynipid Gall Wasps on Oak
- Cytospora Canker of Spruce
- Decay Considerations In Pruning
- Declining Tree: Plant Health Care Report
- 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
- Dothistroma Needle Blight of Pines
- Douglas-fir Beetle
- Drought and Landscape Plants
- Dutch Elm Disease Technical Report
- Eastern White Pine Cultural Problems and Decline
- Eastern White Pine: Plant Health Care Report
- Elongate Hemlock Scale
- Emerald Ash Borer Technical Report
- Emerging Pests of Arbutus
- Entomosporium Leaf Spot
- European Hornet
- Excising Bark Tissue
- Factors of Oak Decline
- Fall Webworm
- FAQs About Pesticide Applications
- Fireblight Technical Report
- Firewise Landscaping
- Flowering Dogwood Disorders
- Flowering Dogwood: Plant Health Care Report
- 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
- Growing Degree Days
- Growth Regulation of Shrubs Commercial
- Growth Regulation of Shrubs Residential
- Growth Regulation of Trees Commercial
- Growth Regulation of Trees Residential
- Hawthorn Rust Diseases
- Hawthorn: Plant Health Care Report
- Hedge Pruning
- Hemlock Rust Mite
- Hemlock Woolly Adelgid
- Hemlock: Plant Health Care Reports
- Holly Leaf and Twig Blight
- Honeylocust: Plant Health Care Report
- IPM for Landscape Plants
- IPM of Clearwing Borers
- Iron Deficiency
- Irrigation
- Ivy on Trees
- Japanese Beetle
- Japanese Black Pine: Plant Health Care Report
- Japanese Cherry: Plant Health Care Report
- Japanese Holly: Plant Health Care Report
- Japanese Knotweed
- Japanese Maple Scale
- Japanese Maple: Plant Health Care Report
- Japanese Privet: Plant Health Care Report
- Juniper Tip Blight
- Juniper: Plant Health Care Report
- Keithia Blight
- Lacebugs Technical Report
- Landscape Protection from Boxwood Blight
- Laurel Wilt
- Laurel Wilt (West Coast)
- Leafy Mistletoe
- Lethal Bronzing of Palm
- Leyland Cypress: Plant Health Care Report
- Lichen and Trees
- Lightning Protection FAQ
- Lightning Protection for Trees
- Lightning Protection Fuses
- Linden: Plant Health Care Report
- London Plane: Plant Health Care Report
- Madrone Canker
- Magnolia Scale
- Managing Oak Wilt Disease
- Managing Trees in Severe Drought
- Managing Trees over Time: Plant Health Care Report
- Mature Tree: Plant Health Care Report
- Mealybugs on Taxus
- Micronutrient Deficiencies
- Mimosa Wilt
- MoniTor® Rx IPM Program
- Mountain Laurel: Plant Health Care Report
- Mulch Application Guidelines
- Mycorrhizal Inoculation
- Needle Diseases of Conifer
- Northern Red Oak: Plant Health Care Report
- Norway Maple: Plant Health Care Report
- Oak Leaf Skeletonizer
- Oak Leafroller
- Obscure Scale
- Olive Knot
- Optimum Soil pH Ranges
- Pear Thrips
- Pear Trellis Rust
- Periodical Cicadas
- Pests of Pines
- Phytophthora Canker
- Phytophthora Root and Collar Disease
- Phytophthora Root and Collar Disease with Lists
- Pieris: Plant Health Care Report
- Pin Oak: Plant Health Care Report
- Pinewood Nematode
- Pittosporum Decline
- Potassium Deficiency in Palm
- Potassium Phosphite
- Powdery Mildew on Dogwood
- Powdery Mildew Technical Report
- Predators of Crape Myrtle Bark Scale
- 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
- Red Maple: Plant Health Care Report
- Redbud: Plant Health Care Report
- Relative Tolerance of Tree Species to Construction Damage
- Resistance Recording Drills for Decay Assessment
- Role of Nutrients
- Root Collar Disorders
- Root Pruning
- Rose Rosette Disease
- Rose: Plant Health Care Report
- 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
- Silver Maple: Plant Health Care Report
- Small Tree Support Systems
- Small Trees Under Utility Lines
- Soil Density
- Soil Drainage
- Soil for Urban Tree Planting
- Sonic Tomography
- Sooty Bark Disease
- Southern Magnolia: Plant Health Care Report
- Southern Pine Beetle Technical Report
- Spider Mites Technical Report
- Spongy Moth
- Spongy Moth Host Preferences
- Spotted Lanternfly Technical Report
- Spruce Bud Scale
- Spruce Gall Adelgid
- Spruce: Plant Health Care Report
- Starch Analysis
- Storm-Related Salt Injury
- Structural Pruning of Young Trees
- Sugar Maple: Plant Health Care Report
- Summary of Needlecast and Needle Blight Diseases
- Sycamore Borer
- Taxus Disorders
- 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
- Understanding Prescription Fertilization
- Vent Installation
- Verticillium Wilt on Woody Landscape Plants
- Verticillium Wilt Resistant Species
- Viburnum Leaf Beetle
- Viburnum Leaf Beetle
- Vista Pruning
- Voles
- Wax Scales
- Weir's Cushion Rust of Spruce
- White-barked Birch: Plant Health Care Report
- Why Fertilize Landscape Trees?
- Willow-Conifer Rust
- Winter Injuries on Landscape Plants
- Winter Injuries on Landscape Plants Technical Report
- Winter Moth
- Winter Moth
- Wood Decay in Living Trees
- Yew: Plant Health Care Report
- Young Tree: Plant Health Care Report