Trees that are healthy and beautiful tend to attract unpaid customers that do damages. Insects like other animals need to feed, this sounds normal but the question that comes right after is what do they feed on? Though they feed on the trees for survival, they cause different types of damages to trees. Insects happen to be responsible for two specific types of damages caused to trees growing. Firstly, it causes direct injury by feeding on it. The insects eat leaves or burrows in stems, fruit, or roots. The second type is caused by indirect damage to it. This time, the insect itself does not cause harm but creates a situation whereby it transmits a bacterial, viral, or fungal infections onto the crop.

Insects in gardens can become pests and they begin to pose threats as well as began to damage crops in that garden. The damages caused vary, depending on the way that that insect feeds on the plants. Insects with chewing mouthparts cause damages that appear on leaves or stems as missing tissue, holes, or as ragged edges. The type of insects that are known to cause chewing damages are insects like grasshoppers and Eastern lubber.

Insects that have piercing-sucking mouthparts are the ones that have very strong mandibles which they move laterally to usually cause browning and or yellowing to plants, and also possible wilting as well. Such insects include whiteflies, aphids, scales and spider mites.



– The defoliators- they feed devouringly and eat the leaves till the plants are bare. The Caterpillars often fall under this category. Insects like the leaf miners also burrow into the leaves of some plants and leave tunnels all over them.

– Gall Makers- these kinds of insects get to the plant tissue, by putting either their whole bodies of almost their full bodies into the tissue. They go into stems or twigs and then cause them to swell up. Example of gall makers is blueberry gall midge larvae that feed on leaves and also lay their eggs in the plant tissues.

– Wood borers- they cause serious damage by feeding on wood that are still living and structures that are also made of wood. Powder post beetles as well as twig girdlers cause damage of this kind.

– Emerald ash borer (beetle)- this beetle has spread across to different trees aside destroying the ash trees in large numbers. According to research, this invasive green insect had already begun to attack the white fringe trees. They are known to be native to the Asian continent. These borers invade trees by laying their eggs on the barks. Then, the feeding galleries of the insect larvae in the bark of the trees disrupt the flow of water and nutrients and end up starving the tree.

– The Walnut twig beetle- this beetle is a native of New Mexico as well as northern Mexico. It attacks the walnuts in Arizona. An accumulation or concentration of stem cankers on branches can cause an infected tree to die. The beetle (Pityophthorus juglandis) happens to be a vector that has caused thousands of canker diseases.

– Asian long-horned beetle (ALB)- the Asian long-horned beetle happens to be a potential cause of a lot of damage than the popularly known Dutch elm disease, gypsy moths, chestnut blight and even goes as far as to destroy millions of treasured hardwood trees in the States. This insect poses a threat to the hardwood trees in America. The ALB is threatening to forest resources and recreation in general. Got an insect problem? Contact our Jacksonville Arborist to help sort out the issue.