• Sat. Jun 22nd, 2024

Why Do The Leaves On My Tree Have Brown Or Black Spots?

Tree Trimming Adelaide

If you’re like me, you probably love trees. I love how they look, how they smell and most of all, how they provide shade and comfort for people. But there are times when tree leaves get brown spots or black spots on them that can be quite alarming. Hire Tree Removal Adelaide experts for tree removal!

Leaf spot diseases vary in appearance,

Leaf spot diseases vary in appearance, but generally cause circular or irregularly shaped black or brown lesions on tree leaves. Tree Removal Adelaide can help to inspect the tree and cure the diseases.

The fungi that cause leaf spot diseases are microscopic organisms that live on the surface of leaves. They can be spread by insects, wind or water, as well as by other trees’ roots and branches. 

Fungi can also overwinter in fallen leaves and twigs, so if you have an infested tree near your home’s foundation it may be wise to remove these items annually before they can become a source of fungal spores during dry spells when there is little rain to wash them away.

The Likely Cause of Black and Brown Spots Is a Fungal Infection

A fungal infection is the most common cause of brown or black spots on leaves and branches. Fungi are a type of plant that grow in soil, on plants and even in your body. They often appear as black, brown or white growths (sometimes called mould) on leaves, stems and fruit; they also cause leaf spot diseases.

What Symptoms Might You Notice?

 If you have a fungal infection on your trees, it’s likely that you will notice symptoms such as leaf spots, browning or dying of branches and leaves. 

You may also see small insects called scale feeding on the leaves. Scale is another common problem for homeowners as it often causes yellowing, dropping leaves.

Symptoms of leaf spot diseases include:

  • Leaves with small, irregular spots that turn brown or black as the disease progresses. The spots may be a different color than the rest of the leaf.
  • Yellowing and curling leaves. Brown discolouration on tree branches are also signs of a fungal infection.

What Should You Do?

If you have a tree with brown or black spots on its leaves, the best thing to do is to prune out the infected parts by Tree Removal Services in Adelaide. Then, spray your trees with a fungicide designed for trees.

Keep your tree healthy by watering and fertilising it regularly.


Don’t panic, but do take action. If you notice leaf spots on your trees, the first thing to do is determine what caused them.

Leaf spot diseases vary in appearance but generally cause circular or irregularly shaped black or brown lesions on tree leaves. If you notice this pattern of lesions forming on any leaves, it’s important that you act quickly to keep your trees healthy! Hire Tree Services Adelaide to maintain your garden in good condition.