Lichen grow on many kinds of surfaces including trees, soil and rocks. The kinds that land on trees have found a stable surface that has sufficient sunlight, moisture, and minerals to sustain them.

The grey patches are likely lichen, a combination of a fungus and an algae. It is harmless to you and the tree. It is common ...

What the lichen growing on Oregon's trees can tell us about air quality. S22 Ep2210. Fixed iFrame. Width: in pixels px Height: in pixels px. Copy. Responsive iFrame. Copy. Link Copied to Clipboard.

Now that deciduous trees are bare, trunks and branches have taken center stage, and you might be noticing nuances and irregularities that evaded your attention over the summer. For instance, what are ...

This Jan. 4, 2023, photo provided by Jessica Damiano shows light green masses called lichens growing on a maple tree on Long Island, NY.

Sometimes our trees can fall victim to disease or environmental damage, so it’s always a good idea to keep an eye on them to watch for something unusual.

Lichens have a slightly bit different growth habit. While Scott notes they are also found on 'rocks, trees, walls, and roof tops,' it's their structure that makes them unique.

Now that deciduous trees are bare, trunks and branches have taken center stage, and you might be noticing nuances and irregularities that evaded your attention over the summer. For instance, what ...

But they aren’t parasitic; they’re opportunistic, which is to say they like to grow on trees that are already ailing or growing in poor conditions. Lichens are symbiotic organisms of fungi ...

Now that deciduous trees are bare, trunks and branches have taken center stage, and you might be noticing nuances and irregularities that evaded your attention over the summer. For instance, ...