Is there really a fungus attacking your trees? Do you know how to recognize fungus, prevent it from spreading, and obliterate what fungus is already there? Did it have a fungus problem last season? Now is the time to handle the various fungi that can attack your trees and bushes.


This is a good question for your Divine Lawns landscaping gurus. In general, you might find that some fungi are not damaging to the plant. They are just ugly. Spraying fungicides around to get rid of the ugly might damage the plant since some fungicides may harm beneficial organisms. You never really want to spray if you don’t have to. Again, your landscape partners will be able to tell you when and if to spray.


Good question! There are two broad categories of fungicides: protectants and systemics. 

Protectants will protect the plant, tree, or bush against infection. 

  • They require uniform distribution over the plant surface.
  • They do not penetrate the plant.
  • They can protect against infection.
  • They will require more than one application. 
  • Fungi are not likely to become resistant to this type of fungicide.

Systemic fungicides will prevent disease by getting into the plant.

  • Since they are absorbed into the plant, they can prevent diseases away from the application site.
  • They are often precise about which fungi they attack.

Can it be avoided?

Some fungi can be avoided by choosing plants that are resistant to fungus. Maintaining fertilizers can reduce disease since pathogens (like fungi) do not reproduce on trees already resistant to them.

Fallen leaves and fruit should be removed as soon as possible to reduce the spread of fungi spores. Removing dead branches and twigs will also help keep the fungi from spreading. And only use fungicides when they are needed. Overuse can create fungus populations that are resistant to the fungicides needed.

How do fungi develop resistance to fungicides?

Broad-spectrum fungicides act by interfering with some of the fungus’s vital functions. There won’t be much chance for resistance to develop since the fungus would have to undergo too many changes.

Systemic fungicides are effective against many fruit tree diseases since they are single-target fungicides. This means they interfere with one fungus’s life function, which means only one change can make it resistant. 

Sensitivity to particular fungicides can return if that fungicide is not used for a while. On the other hand, sensitivity might not return to fungi resistant to the fungicides since the resistance is based on mutation.

What kind of trees are most likely to be damaged by fungi?

Apple trees are most likely to be damaged by diseases and insects in the mid-country states. While some varieties of apple trees are more resistant to fungal diseases, most are susceptible. 

Fungicide sprays will need to be sprayed during April and May for the more susceptible varieties of trees. They will have to be put on a schedule of sprays to keep the chemicals covering the developing leaves, branches, and fruit. 

Insecticides will have to be added after the petals fall from the blossoms to prevent wormy apples. Insecticides are not used while the blossoms grow and open to protect the bee populations. Bagging will help in prevention, as well. While there are bags explicitly made for bagging the new apples as a protectant, lunch bags and twist ties will effectively prevent infestation by insects and fungus diseases that attack new fruit. 

What other trees are attacked?

Some fungal diseases will attack deciduous trees (trees that lose their leaves in the fall). Some fungal diseases will cause the trees to lose their leaves and look disfigured. Trees with this fungus can be treated with an application of fungicide in the spring. In addition, there is some prevention if the tree is well pruned and has a good watering schedule and plenty of drainage.

Dutch elm disease attacks dutch elm trees. Unfortunately, once the trees become infected, they will die. Call your Divine partners to arrange for the removal of infected trees, so it doesn’t spread any further.

Some trees experience stress that can make them more susceptible to disease and insect invasion. For example, construction stress can be very harmful. Pruning away the infected areas can slow the spread of the diseases, but it is almost always deadly.

Evergreen trees are not spared from fungal infections. These infections can impact the needles and the cones of the trees. Therefore, fungicides should be applied several times in the spring and usually bring the tree back to good health.

What to do if you notice symptoms

If you notice that your tree or trees are not blooming in good health, contact your Divine representative for a consultation. If it’s an incurable problem, you will need to act quickly to prevent the spread to healthy trees. The infected tree will have to be removed, and the faster you and your landscape professionals can arrange to do it, the better it will be for your other trees.

It is sad when a tree that has been part of your life for a long time has to be removed. But, even if you don’t think of trees as “living beings, your sadness is normal.” It has provided shade and protection for your home and family and will leave a big space in your landscaping. Replacing a tree that has to be removed should be discussed with your landscape gurus since they will need to check the other trees nearby to make sure the disease hasn’t spread.

Your Divine services experts are there to help you, and they take pride in keeping their clients happy and satisfied with their services. They help free up your valuable time to keep up with family activities and events and build your home business if any. So give them a call; they are waiting to serve you.