Quick Answer: How Do You Treat Blue Spruce Cytospora Canker?

Does canker kill trees?

Canker diseases may cause extensive damage to trees when they kill all of the bark in a particular area, thus girdling a branch or main stem.

Girdling results in death of all parts of the plant above the canker.

If the trunk is affected, the entire plant may die..

How do you treat a sick Blue Spruce?

The fungus is spread by splashing and dripping water beginning in spring and continuing into the fall. Newly emerging needles can become infected during wet spring weather. Control – If symptoms appear, diseased trees should be sprayed with a fungicide in the last 2 weeks of May and again 4 to 6 weeks later.

What kills the tops of spruce trees?

A: That sounds like the work of either the white pine weevil or the pine tip shoot moth. Both are insects that burrow into the tip wood and kill it off. It’s not a common problem with Serbian spruce (Picea omorika), but it can happen. The adults lay eggs at the tips of pines and spruce.

Why are the needles on my blue spruce turning brown?

Cytospora canker, a fungal disease, is the most common reason for unnatural needle drop on Colorado blue spruce. … Cytospora canker is a very common disease of older, mature Colorado spruce in the Midwest. The first symptom is browning of needles at the tips of the branches, followed by death of the lower branches.

What is the lifespan of a blue spruce?

600-800 yearsThe Colorado Blue Spruce (Picea pungens) is a member of the pine tree family that is native to the Rocky Mountain regions of North America. The tree has a mature height of around 70 to 80 feet. While blue spruce grows relatively slowly, it is long-lived and may reach ages of 600-800 years.

What causes a blue spruce to die?

Needlecast fungi often infect needles on the current year’s shoots. As the disease progresses, the needles die, usually the year following the infection. … The two most common needlecasts we find in spruce are caused by the fungal pathogens Rhizosphaera and Stigmina/Mycosphaerella.

What is a good fertilizer for blue spruce?

You’ll want to sprinkle 10-10-10 slow-release granulated fertilizer over the soil in the root zone. Then water with about two inches of water to prevent fertilizer burn and incorporate the fertilizer into the water.

How do you control Rhizosphaera needle cast?

Needle cast diseases can be effectively controlled with fungicides containing chlorothalonil. For Rhizosphaera needle cast, two properly-timed applications per year for at least two consecutive years, and sometimes three years, is required for control.

Is Cytospora canker contagious?

Where does Cytospora canker come from? Cytospora canker is caused by the fungus Leucocytospora kunzei (also referred to as Leucostoma kunzei), which survives in infected branches. Spores of the fungus are spread by wind, rain splash, insects, birds and mammals.

How is Cytospora canker treated?

Once infection occurs, the best treatment is to increase plant vigor and sanitation. Remove all infected limbs and other areas. Clean wounds to avoid further spread of infection. Remove dead bark to dry out the diseased area and help the tree defend itself against insect and fungal attacks on the cankered area.

What does Cytospora canker look like?

One of the first symptoms of cytospora canker disease on spruce is the browning of needles on the tree’s lower limbs. When they fall, you may notice light patches of resin on the dead bark of the branches. Over several years, symptoms of cytospora canker spread and upper branches brown and die.

How do you keep a blue spruce healthy?

Caring for Colorado spruce is simple once the tree is established. Water it regularly to keep the soil moist through the first season and only during dry spells thereafter. The tree benefits from a 2-inch (5 cm.) layer of organic mulch that extends just beyond the tips of the branches.

Can you save a dying spruce tree?

There is no treatment for cytospora canker, according to Yiesla. A tree can live with the disease for a few years — “it’s not an immediate death sentence,” she said — but branches will continue to die. Remove every dead branch with a clean pruning cut next to the trunk, she said.

Why is the top of my spruce tree Brown?

A Pest or Disease Problem: A number of pests and diseases can cause a pine or spruce treetop to turn brown. … One of the few needle diseases that attacks from the top down is pine wilt disease. Small worms called nematodes invade trees and quickly cause severe damage.

How do I bring my conifers back to life?

The main thing to remember is that most conifers will not grow back from old wood. So if you prune them now, you could cut back too far and the plant will never recover. If you really want to give nature a helping hand, you could consider applying a general purpose fertiliser.