Blog Archives

Information of tree and shrub pests and diseases.

Lichen and Trees

So the trunk of your tree or shrub is covered in crusty green stuff – don’t panic! It’s unlikely that this ‘green stuff’ is harming the tree. What you are observing is the growth of lichen on the bark. Lichens

Posted in Environmental Issues, Pests and Diseases, Tree Advice

Look Out for Leaf Curl and Leaf Blister

Leaf curl and leaf blister are a group of diseases caused by the fungus Taphrina. Taphrina caerulescens is the causal agent of oak leaf blister, and Taphrina deformans is the causal agent of peach leaf curl. These diseases are common

Posted in Environmental Issues, Pests and Diseases, Tree Advice

California Oakworm

The coast live oak is an important part of both the wild and urban landscape through most of coastal California. When these beloved trees are defoliated by our native oakworm it can be a dramatic sight for the home owners.

Posted in Pests and Diseases Tagged with: Caterpillar, Coast Live Oak, Oak worm, Oakworm

Armillaria: Common Killer of Trees and Shrubs

One of the most under-diagnosed causes of tree failure are root rot pathogens. Here in southern California we have a few rots that plague our trees and I want to talk about one of them in particular. Armillaria Root Rot

Posted in Bartlett Tree Experts, Pests and Diseases, Tree Advice, Tree Safety

Winter Wash of Trees

If your trees or shrubs suffered badly from insect attack this year (e.g., aphid, scale, red spider mite, etc.), then there is an extremely high probability that they will be back next year in far greater numbers.

Posted in Pests and Diseases

Being a leader in the tree care industry means continually focusing on learning and innovation. Bartlett’s Tree Topics blog follows in that tradition by offering a place to receive advice on trees, tree pests, tree preservation, and more.

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