Tree Advice

Many organizations choose to give away or sell very young trees to help encourage tree planting. Often, you leave home not knowing that you’ll come back with a new tree

What makes fall a good time to plant a new tree? During autumn, the soil is still warm enough to support root growth, allowing the root system to become established.

Lots of scale insects are active during the heat of summer, but some of these tiny pests are just now beginning to hatch and will continue causing tree and shrub

Storms can wreak havoc in a community and while utility companies work to clear trees from power lines, there is another group actively assisting in storm cleanup of trees that

Pruning mature trees removes dead and dying branches to maintain plant health and safety

Looking at problems posed by excess soil and mulch around the base of tree:

Most of us are familiar with the results of drought stress, but did you know that high temperatures alone can cause significant damage to the health of your plants? Given

Although long used as a groundcover, ivy is harmful for trees. It is not indigenous, and many species are aggressively invasive and displace native species. In North America, the most

The proper care of young trees can prevent many future problems. Browse our resources to learn more about how to best care for seedlings and young trees. Planting Ten steps

Pear trellis rust is caused by the fungus Gymnosporangium sabinae. It was introduced into the United States from Europe in the 1990s and has been progressively spreading through states in

Adult sawflies are often similar in appearance to flies or wasps. The larvae are also similar, though sawflies have one simple eye on each side of the head and five

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

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