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Tree Pest and Disease Management2024-09-11T17:14:46+00:00

Professional Tree Pest Control & Disease Management

When you team up with A Plus Tree, you are getting expert care tailored to every single tree! Our arborists inspect each tree in person to diagnose diseases or pests that may be stressing them out. From there, we build customized tree care plans, using our expansive repertoire of treatments to address specific issues while prioritizing overall tree health. We are strong proponents of tree health because a healthy tree is more resilient against infections and can better fend off future threats.

Identifying and Treating Tree Diseases

Early detection is key to treating tree diseases and pests because it greatly improves the success of treatments. Stay proactive by scheduling annual tree inspections with our experts and keeping an eye on your trees yourself. By identifying issues early, we can implement targeted treatments to effectively combat diseases and pests. On top of that, remember to maintain good tree health to reduce the risk of infections and pest attacks, which helps save both your trees and your budget in the long run!

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COMMON TREE DISEASES

Signs & Symptoms of Fire Blight may appear as “Flagging” and black leaves/branches as if a torch was taken to the leaves.

QUICK FACTS

  • A bacteria, not a fungus
  • Overwinters in cankers
  • In fall, leaves often turn red, then black
  • Infection moves in tree from infection to roots
  • Spread by wind and rain
  • Vigorously growing shoots are most affected
  • More susceptible when trees are young

COMMON INFESTED TREES

  • Pear trees
  • Crab apple
  • Hawthom
Signs & Symptoms of Pine Pitch Canker may appear as needles turning yellow, branch dieback, large pitch (sap) pockets or running down the trunk.


 

QUICK FACTS

  • Isn’t known to move within tree.
  • Each canker is a distinct infection
  • Infections cause girdling
  • Results in canopy dieback
  • Resin is produced as a result of defense mechanism

COMMON INFESTED TRESS

  • Monterey Pine
  • Aleppo Pine
  • Mondel Pine
Signs & Symptoms of Sycamore Anthracnose may appear as curling/deformed leaves and branch or twig dieback.

QUICK FACTS

  • Overwinters in cankers on twigs
  • In spring, the fungal spores carried by wind/rain to twigs and leaves
  • Premature leaf drop
  • Repeated defoliation can weaken tree

COMMON INFESTED TRESS

  • Sycamore trees

GENERAL DISEASE CLASSIFICATION

Root

  • Phytophthora
  • Armillaria
  • Verticillium Wilt

Stem

  • Cankers, Pine Pitch
  • Heart Rot
  • Blue Stain Fungus
  • Sudden Oak Death

Foliage

  • Powdery Mildew
  • Leaf Spots
  • Anthracnose
  • Needle Blight

Tree Pests – What are the Warning Signs?

By knowing the warning signs, you can identify pests and act swiftly! Keep an eye out for telltale signs like holes or tunnels in the bark, discolored or wilted leaves, premature leaf drop, and stunted growth. Also be on the lookout for sawdust-like material (frass) around the base of the tree, egg masses, or gall formations. If you notice any of these signs, reach out to us for a complimentary inspection and pest management plan!

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COMMON BUGS & INSECTS

Signs & Symptoms of Aphid infestation may appear as “sticky” stuff, curling leaves and branch or tip dieback.

QUICK FACTS

  • Weakens plant
  • Yellowing leaves
  • Stunt shoots
  • Causes sooty mold

COMMON INFESTED TRESS

  • Tulip Tree
  • Hackbery
  • Linden
Signs & Symptoms of Spider Mite infestation may appear as needle or leaf browning, webbing throughout and twig dieback.

QUICK FACTS

  • A sucking pest, but not an insect An arachnid
  • Severe feeding can kill the plant
  • Webbing can cover terminal growth

COMMON INFESTED TRESS

  • Spruce/Cypress
  • Apparently, anything
Signs & Symptoms of Scale infestation may appear as “sticky” stuff, curling leaves and branch or tip dieback.

QUICK FACTS

  • Shaped ike rounded bumps
  • Scale cover is a waxy

COMMON INFESTED TRESS

  • Linden
  • Magnolia
  • Olive
Signs & Symptoms of Scale infestation may appear as “sticky” stuff, curling leaves and branch or tip dieback.

QUICK FACTS

  • DOES NOT produce honeydew
  • Smaller than Soft Scale
  • Shaped like flattened sphere
  • Hard protective

COMMON INFESTED TRESS

  • Citrus
  • Cypress
  • Sago Palm
Signs & Symptoms of chewing insects (such as the Tent Caterpillar, Tussock Moth and Oakworm) infestation may appear as holes or skeletonization of leaves, small nests on the trunk, or unseasonably loss of leaves.

QUICK FACTS

  • Feed on the leaves
  • Healthy trees can tolerate defoliation
  • Control mainly for severe infestation
  • Populations vary unpredictably from year to year

COMMON INFESTED TRESS

  • Oaks
  • Maples
Signs & Symptoms of wood borer infestation may appear as exit or entrance holes on the trunk, pitch tubes, sawdust around the base of tree, and/or crown dieback.

QUICK FACTS

  • Feed on phloem, sapwood & heartwood
  • 2 Types: Flat-headed & Round-headed

COMMON INFESTED TRESS

  • EAB: Ash
  • PSHB: Sycamore, Live Oak, Golden Rain
Signs & Symptoms of bark beetle infestation may appear as exit or entrance holes on the trunk, pitch tubes, sawdust around the base of tree, and/or crown dieback.

QUICK FACTS

  • Generally, attack stressed trees
  • During outbreak, healthy trees too
  • Release pheromones that attack more
  • Tree death within 4-10 months
  • Fly during May-Oct
  • Lay eggs in phloem, feed on phloem

COMMON INFESTED TRESS

  • Pine Beetle: Ponderosa, Lodgepole, Jeffrey
  • Red Turpentine: Monterey

A PLUS TREE’S THC PHILOSOPHY

A-Plus-PHC-philosophy
  • Start with the soil and treat from the bottom up (inside out).

  • Take care of our clients and their goals.

  • Take care of the environment and use organic products when can. If not, use what is least toxic.

  • Continuously seek ways to do it better.

¡ INVASIVE PEST ALERT !

Emerald Ash Borer (EAB) has hit the West Coast and discovered in Oregon. EAB targets Ash trees and has already devastated millions of them across the country. Protect your Ashes now!

Learn more about EAB

An Integrative Approach

If you’ve ever taken a science class, you may have heard the term “Integrative Pest Management”. This elaborate term simply means to combine techniques. These techniques include prevention and planting a certain tree species, physically pruning the diseased limbs of a tree, biologically introducing natural predators of the pest, and then chemically to treat with insecticides, herbicides or fungicides. We examine all the factors and determine the best approach.

At A Plus we have dedicated teams, tree doctors if you will, that specialize in the health and management of your trees. We have Certified Arborists are Tree Health Care (THC) specialists who can administer proper solutions for your trees at any stage.

Reach out! We’d love to meet your trees.

FREQUENTLY ASKED QUESTIONS

A diseased tree can show many symptoms, including wilted or discolored leaves, premature leaf drop, and branch dieback. The bark might have cankers, lesions, or fungal growth and decay. In severe cases, the tree may appear weak or stunted, with overall decline in health and vigor.
Signs & Symptoms of Aphid infestation may appear as “sticky” stuff, curling leaves and branch or tip dieback.
Inspect the tree for signs of damage, such as holes in the bark, wilting leaves, or unusual growth. Look for evidence of insect activity like frass, eggs, or feeding damage on leaves. If possible, closely observe the pests themselves to examine their appearance and behavior. Use resources like field guides or local experts to help identify the pest based on observed symptoms and characteristics.
There are many species of tree pests, but they can be categorized into piercing-sucking pests, chewing pests, and wood boring pests. Piercing-sucking pests, like aphids and scales, pierce their mouthparts into the tree, sucking on the sugary sap. Chewing pests, like caterpillars, chew on the leaves for food. Wood boring pests, like bark and wood borer beetles, tunnel into the tree trunk or branches to feed and lay eggs.
Common tree diseases vary by geographic location, climate, and tree species. But some of the most common diseases found on urban trees are fire blight, anthracnose, cankers, root rot, and powdery mildew.
KEY BENEFITS OF PLANT HEALTH CARE
  • Healthier and greener trees!!

  • Save money in the long run with less tree removals due to pest and/or disease.

  • Healthier trees can also mean less pruning maintenance and hazards due to dieback.

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