There are a lot of people who ask whether or not to remove fungus from trees, or algae and other tree growths. They can hurt the aesthetic of your tree if that’s something you are worried about, and they can sometimes be harmful, yes. However, it’s not always necessary – or even recommended – to remove them. It’s very important to ensure you do not taper with a tree that is healthy, as you could affect its ecosystem. Let’s break down when it’s appropriate to act and how to handle removing fungus from trees effectively. We’ll also include some tips for cleaning specific tree types like magnolias, evergreens, and oaks.
When Algae, Fungus, and Mold Are a Problem for Trees
Algae, fungus, and mold can form a thin layer on your tree trunks and branches. At first glance, it might not seem like a big deal, but over time, these growths can create problems. They trap moisture, making the bark damp and increasing the risk of fungal infections or rot. On top of that, heavy buildup can make it harder for trees to breathe and absorb sunlight, which interferes with photosynthesis.
That said, not all growths are harmful. Some types of moss or lichen are completely harmless and even indicate a healthy ecosystem. This is why understanding what you’re dealing with is so important. Removing fungus from trees unnecessarily can stress your trees and strip away natural protections.
Identifying Removing Fungus, Algae and Mold
Before deciding whether to remove algae, fungus, or mold, take a good look at your trees:
- Are there branches that look dead or brittle?
- Do you see cracks in the trunk, or is the bark peeling excessively?
Mold and algae can sometimes signal that something is off with the tree’s health, so if you notice these signs, consider consulting a professional. Regular inspections are key for identifying and removing fungus from trees before they become hazards.
When Not to Remove Algae, Fungus, and Mold
Sometimes, leaving algae, fungus, or mold on your trees is the best course of action. For example:
- Harmless Growths: Moss and lichen are often mistaken for harmful growths but are typically harmless. In fact, they can provide shelter for beneficial insects.
- Established Ecosystems: Removing growths can disrupt the ecosystem around your trees. If birds, insects, or other wildlife rely on it, think twice before cleaning.
- Tree Health: If your tree is already stressed or damaged, cleaning it might do more harm than good. In these cases, focus on improving the overall health of the tree instead.
How to Remove Algae, Fungus, and Mold from Trees
If you’ve determined that removing fungus from trees is necessary, the cleaning process isn’t complicated, but it does require some care to avoid damaging the tree.
(Sometimes, you may need to completely unroot the tree, especially in areas like The Bronx, where urban conditions can complicate tree care. For these situations, it’s best to rely on professional Bronx tree cutting services.)
Here’s a general method that works well:
- Gather Your Tools: You’ll need a garden hose, a soft-bristle brush, and a cleaning solution. For the solution, mix one part water with one part vinegar or use a tree-safe detergent. Avoid harsh chemicals, they can harm the tree.
- Rinse the Tree: Start by spraying the tree with water. This will loosen up any dirt, mold, or algae, making it easier to clean.
- Scrub Gently: Use the brush to scrub the affected areas. Apply light pressure to avoid damaging the bark. Work in small sections and rinse as you go.
- Rinse Again: After scrubbing, give the tree another rinse to wash away any residue.
- Repeat if Necessary: For stubborn mold or algae, you might need to repeat the process a few times.
If you’re dealing with larger trees or a severe buildup, it’s worth calling in a professional. They’ll have the equipment and experience to handle the job safely.
How to Wash Specific Tree Types
Different types of trees require slightly different cleaning methods. Here’s how to approach some of the most common ones:
Magnolia Pressure Washing
Magnolias are beautiful, but their smooth bark makes them prone to algae buildup. When pressure washing magnolias, stick to a low-pressure setting. Too much force can damage the bark. Start by rinsing the tree with plain water, then use a mild cleaning solution. Always spray at an angle to avoid forcing water into the bark, which can lead to rot.
Evergreen Pressure Washing
Evergreens, such as pines and spruces, can develop mold in their dense foliage. When pressure washing evergreens, focus on the branches and avoid direct blasts to the trunk. Evergreen power washing works best with a soft spray nozzle. A mix of water and a tree-safe detergent can help break down stubborn mold without harming the tree.
Oak Pressure Washing
Oaks have thicker bark, which can handle a bit more pressure. That said, you should still use caution. When pressure washing oaks, start with a low-pressure rinse and gradually increase if needed. Pay special attention to cracks and crevices where mold and algae like to hide. Using a soft brush alongside pressure washing can help clean these areas more effectively.
When to Call a Professional
While many tree-cleaning tasks are manageable on your own, some situations call for expert help. If you’re dealing with a large tree, severe mold or algae buildup, or a tree that’s showing signs of significant damage, it’s best to call in our expert arborists. We have the tools and expertise to clean your trees safely and thoroughly while identifying when to remove fungus from trees.