Bacterial leaf scorch (BLS) is caused by the bacterium Xylella fastidiosa. This disease impacts certain shade trees resulting in uneven ‘scorching’ of leaf margins in late summer and early fall.

Two common causes of root disease in California are species of the fungus Armillaria and species of Phytophthora, which are fungus-like organisms. There are many differences between the two pathogens,

When native desert plants are irrigated regularly, they can produce a tremendous amount of new growth. This can be good from the perspective of shade and screening, but the new

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

Arbor Day and Earth Day are holidays filled with meaning for a tree company. Arbor Day is dedicated to planting trees and celebrates all the benefits those trees bring to

This year, Bartlett brought female employees from across the Company together for three days of networking and skills training — and to strategize about how we can help more women

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

This photo shows a simulated aerial rescue by staff of the Elmsford, NY office, just a portion of the tree safety training performed by Bartlett Tree Experts on a regular

Here in Santa Barbara we understand that the ground is far from sedentary. Whether it’s construction of new homes or mud sliding from recent storms, we are in a constant

Come on out with your family and friends to help your community and the Earth by volunteering to plant trees! Assist Caroline Dowd with her Girl Scout Gold Award Project,

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

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

Many trees and shrubs in Indiana are losing an abnormal amount of leaves, or showing signs of foliar damage as a result of unusual environmental factors this year. Spring-like weather

Trees are important for so many reasons. They make our communities more beautiful and livable. We want to share our love of trees with others. Encouraging people to plant and

To be an arborist one must establish a basic level of experience and comprehension in the field of tree care. The International Society of Arboriculture (ISA) is the organization that