Question: I have a blue spruce that is 40-years old and very tall ... applied when the emerging needles are half elongated (1/2 to 2 inches in length). Needle cast diseases can be effectively ...

A: The indication in the photograph (shown here) are classic symptoms of a common foliar disease called Rhizosphaera Needle Cast, which routinely affects Colorado Blue Spruce growing outside of ...

Rhizosphaera needle cast is a fungal disease, caused by Rhizosphaera kalkhoffii that attacks the needles of Colorado blue spruce in the spring, as new needles emerge. However, infected needles often ...

Plant diagnostics is an important role of Nebraska. Positive diagnosis of plant issues is needed for effective management to ...

Rhizospheara Needlecast is a fungal disease that emerges from the stomates (tiny pores in the needles that are used for gas exchange) of blue spruce needles. Severely infected trees will have a ...

Lots of people love the look of a blue spruce. The magnificent color of the silver-blue-green needles truly makes this evergreen an American favorite. The biggest problem we often get asked about is ...

A significant needle drop 5 years down the road makes me wonder about needlecast - a fungal disease that's fond of blue spruce. If that's the case, this is something that can spread to other ...

In Kentucky, Rhizosphaera needle cast is the most common disease of spruce; it also affects some pine species. This disease causes needle drop on lower branches, resulting in a distinct thinned ...

The tree in Castonguay Square had spruce needle cast disease, and now the search is on for a Christmas replacement. WATERVILLE — The giant blue spruce tree in Castonguay Square downtown ...

Plus questions on caterpillars on Colorado blue spruce, gorgeous plowers spilling over a boulder wall, on baptisia or blue false indigo and what is the difference between madevilla and dipladenia?

Needle cast is the most common problem of blue spruce in the landscape. The disease usually starts at the bottom (inside near the trunk) of the tree and progresses outward and upward. The needles ...

Tree problems can be very sneaky. A lot of the time they creep in, and before you know it, the problem is staring you in the face, demanding attention. I've had several calls in the past two weeks ...