Introduction to Cicadas
Cicadas are fascinating insects that are known for their loud droning and buzzing sounds. These insects are classified under the order Hemiptera and the superfamily Cicadoidea.
They are commonly found in regions with temperate climates, and their distinct sounds are a common summer soundtrack in many areas. In this article, we will provide an overview of cicadas, their appearance, sounds, life cycle, and species.
Appearance and Sound
Cicadas are usually brown or green-colored insects, with transparent wings that are veined. They have large eyes located on either side of their heads, and their bodies are characterized by a triangular shape with long legs.
Cicadas are known for their loud and distinct sounds. The males produce the sound by vibrating the membrane in their abdomen, while the females are silent.
The droning sound produced by the cicadas can reach up to 120 decibels, which is comparable to the sound of a jet engine at close range.
Life Cycle and Species
Cicadas have a unique and interesting life cycle. The nymphs hatch from eggs and live underground, feeding on tree roots for several years.
When they mature, they emerge from the ground as adults, shedding their skin, and taking flight. Cicadas are classified into annuals and periodicals.
The annual cicadas have a one-year life cycle, while the periodical cicadas have a 13 or 17-year life cycle. The most famous species of periodical cicadas is Brood X, which emerges every 17 years in the eastern United States.
Vulnerability of Trees to Cicada Damage
Cicadas can cause significant damage to trees, especially small and young ones. They prefer deciduous trees with narrow diameters, and they can cause damage to the twigs, branches, and foliage.
The cicadas feed on the fluids of the trees, causing flagging, twiggy branch tips, and wilting of foliage. However, it is important to note that the damage caused by cicada feeding is minimal on mature trees.
Trees at Greatest Risk
Small and immature trees are the most vulnerable to cicada damage. Trees with a narrow diameter are more susceptible to having their branches snapped off by the weight of the feeding cicadas.
Dwarf trees are also at greater risk of being damaged by the cicada feeding due to their small size and weaker structure.
Damage to Trees
The damage caused by cicadas can be significant, impacting the aesthetic appeal and overall health of trees. The loss of twigs and branches can cause a reduction in the tree’s canopy, affecting its ability to photosynthesize.
The damage to the foliage can reduce photosynthesis, which can result in stunted growth and reduced fruit production. In severe cases, if cicada damage is left untreated, it can cause long-term damage to the tree.
Conclusion
In conclusion, cicadas are intriguing insects that can cause significant damage to trees if left untreated. Small and young trees are the most vulnerable to the damage caused by cicadas.
It is important to monitor trees for cicada damage and take the necessary steps to reduce the damage caused. If you suspect cicada damage to your trees, it is recommended that you seek the advice of an experienced arborist to treat the problem efficiently.
Avoiding Cicada
Damage to Trees
Cicadas can cause significant damage to trees, especially young and small trees. During a periodical cicada event, protective measures should be taken to ensure that trees are not damaged.
In this section, we will outline a few protective measures that can be taken to prevent cicada damage and minimize its impact.
Warning against planting trees during a periodical event
If you are planning to plant new trees, it is recommended that you avoid planting them during a periodical cicada event, which occurs every 13 or 17 years. This is because the immature trees are more susceptible to damage by cicadas.
It is advisable to plant trees at least 2 – 3 years before a cicada event to help them establish themselves and have a better chance of survival.
Protective Measures
Cover tree canopies with mesh
One way to prevent cicada damage to trees is by covering their canopies with mesh or mosquito netting. This will prevent the cicadas from laying their eggs on the tree branches and reduce the damage caused by their feeding.
Mosquito netting or mesh can be secured on the tree branches using twine or another similar material. This protective measure is especially important for fruit trees as they are more susceptible to egg-laying cicadas.
Apply wrap for tree trunks
DeWitt Tree Wrap is a type of tree wrap that can be applied to tree trunks to protect them from cicada damage. This wrap is made of a porous material that allows the tree trunk to breathe while protecting it from cicada damage.
The wrap should be applied around the tree 2 – 3 feet from the base, depending on the trunk’s diameter. The wrap should remain on the tree for at least one year to provide adequate protection.
Lay landscape fabric around trees
Laying landscape fabric around the base of the tree can prevent cicadas from laying their eggs in the soil around the tree’s drip line. This is because cicadas prefer to lay their eggs in loose soil around the drip line area of trees.
Landscape fabric can be used to cover the soil around the tree base, and bricks or stones can be used to hold the fabric in place.
Use insecticide as a last resort
Insecticides should be used as a last resort to prevent cicada damage to trees. Pyrethroid insecticides such as cyfluthrin can be used to reduce the number of cicadas.
However, these insecticides can be toxic to beneficial insects and other wildlife in the area. Before using insecticides, it is recommended to seek the advice of an experienced arborist or a trained professional to minimize the environmental impact.
Removing Damaged Branches
If cicada damage has already occurred, it is necessary to remove the affected branches immediately. This will prevent the damage from spreading and reduce the risk of decay-causing plant material that could harm the tree.
Sanitized pruners should be used to remove the damaged branches, and the pruners should be disinfected after each cut to prevent the spread of disease or other pests.
Conclusion
Cicada damage to trees can be minimized by taking protective measures such as using mesh to cover tree canopies, applying tree wraps, laying landscape fabric and removing damaged branches. It is important to avoid planting trees during a periodical event and consider preventive measures to reduce the damage caused by cicadas.
Insecticides should be used as a last resort and only with the advice of a professional, to minimize their environmental impact. By taking these measures, you can protect your trees and reduce the long-term damage caused by cicadas.
In conclusion, cicadas can be fascinating insects, but they can also cause significant damage to trees if left untreated. Protective measures such as covering tree canopies, using tree wraps or landscape fabric, and removing damaged branches can help to prevent and minimize cicada damage.
It is important to avoid planting trees during periodical events and use insecticides only as a last resort. By taking these measures, we can protect our trees and minimize the impact of cicadas.
Here are some FAQs to address common concerns:
FAQs:
1. Are cicadas harmful to humans?
– No, cicadas are harmless to humans and do not pose a threat. 2.
How long do cicadas live?
– Cicadas have a unique life cycle and can live anywhere from one to 17 years.
3. What kind of trees are more susceptible to cicada damage?
– Small, deciduous, and young trees are more vulnerable to cicada damage. 4.
Do cicadas bite?
– No, cicadas do not bite humans or animals, but they can cause damage to trees.
5. Can insecticides be harmful to the environment?
– Yes, insecticides can be harmful to other wildlife and should only be used as a last resort and with the advice of a professional.