Magnolia Scale: A Growing Concern for Homeowners in Flushing

Magnolia trees are a favorite addition in many Flushing, Michigan landscapes. Known for their stunning blossoms and sometimes unique ornamental forms, they bring elegance to both residential and commercial properties, making them a focal point in any landscape. However, homeowners may face challenges in maintaining the health of these beautiful trees due to an insect pest called magnolia scale.

What is Magnolia Scale?

Magnolia scale (Neolecanium cornuparvum) is a large, stationary insect that commonly infests magnolia trees, especially in regions like Flushing. These insects are oval or circular in shape, growing up to 0.5 inches in diameter. They are usually a pale yellow-brown color with a darker, waxy coating. The adult scale insects attach to the branches, stems, and twigs of the tree, feeding on its sap, which weakens the tree and can cause significant harm to the plant over time.

Signs of Magnolia Scale Infestation

Magnolia scale can be difficult to spot at first, but early signs include the appearance of white, waxy spots on the tree’s branches and limbs. As the scale insects mature, their waxy coating becomes more visible, and the insects themselves become easier to identify. Trees with heavy infestations may show symptoms such as:

• Yellowing leaves or early leaf drop
• Slowed growth and diminished overall health
• Sooty mold growth caused by the honeydew the scales secrete
• Weakening branches and potential dieback
• Hornets flying around your magnolia tree

If left untreated, magnolia scale can cause extensive damage, compromising the tree's vigor and possibly resulting in its death.

How Certified Arborists Can Help Control Magnolia Scale

Dealing with magnolia scale requires a professional approach, as do-it-yourself methods often fail to provide effective control. ISA Certified Arborists have the expertise and equipment necessary to manage and eliminate this insect pest. Here’s how arborists approach magnolia scale control:

1. Early Detection: ISA Certified Arborists are skilled at recognizing the first signs of magnolia scale. Early intervention reduces damage and preserves the health of the tree.
2. Proper Tree Care: Magnolia scale drains water and nutrients from the tree, so maintaining proper watering and fertilization is essential for the tree's health, helping it to better resist scale insect damage.
3. Insecticide Applications: Controlling magnolia scale is challenging, but using insecticides during the crawler (nymph) stage is highly effective in reducing the scale population.
4. Pruning Infected Branches: In cases of severe infestations, pruning out the heavily infested branches may need to be considered. This removes the insect from the plant and helps prevent them from spreading to other areas of the tree.
5. Ongoing Monitoring: Managing magnolia scale often requires multiple treatments over several years. ISA Certified Arborists will inspect and monitor the tree regularly to ensure it stays pest-free and remains healthy.

Magnolia scale poses a serious threat to homeowners in Flushing, Michigan, but with the expertise of an ISA Certified Arborist, this insect can be effectively managed. By recognizing the early signs and providing the right care, magnolia trees can continue to thrive, adding beauty and charm to your landscape. If you notice any signs of magnolia scale, don’t hesitate to contact an ISA Certified Arborist who can help protect your magnolia and keep it healthy for many years.