Here’s what to look out for:
- Needles Turn Yellow or Brown and Drop Off. It’s easy to tell whether your blue spruce trees are healthy or not.
- Drying and Dying of Lower Branches. When you see lower branches of a blue spruce drying and dying, you should expect the worst.
- Dying of New and Emerging Shoots.
How do you save a dying blue spruce?
The following will help you manage needlecast:
- Prune away dead branches, twigs, and infected areas of the tree.
- Remove fallen foliage and destroy it (burn it).
- Apply a fungicide to the tree after removing signs of the infection.
- Deep water the tree once per week to help it recover from the stress.
How do you tell if a spruce tree is dying?
If it’s pliable and bends without breaking, it’s still alive; but if it snaps easily, it’s dead. For the scratch test, use your fingernail to scratch the outer bark of a stem. If the underlying tissue is green, it’s still alive; but if you continue to see brown tissue, that part of the stem is dead.
What to do if blue spruce is dying?
When you first see browning needles on lower branches, and bluish-white resin flowing from them, prune branches back to the next lateral branch at least four inches from the affected area. Prevent spreading the disease by spraying pruning shears with a household disinfectant and allow it to dry between cuts.
Can you save a dying spruce tree?
Your evergreen tree will only need to be maintained by correctively pruning the damaged, diseased, or dead branches in the tree. Branches that have become damaged, diseased, or have died will need to be pruned so that a new leader of the branch can be established.
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.
Will blue spruce needles grow back?
Generally, spruce trees will regrow as long as buds are available, but pine trees pruned past the last set of needles on a branch will not.
What is the life expectancy of a blue spruce?
Growth and Yield- Blue spruce is apparently a long-lived tree, surviving up to 600 years or more. Diameter growth is slow; trees 10 to 13 cm (4 to 5 in) in d.b.h. may be 125 to 135 years old; at 46 to 56 cm (18 to 22 in), they may be 275 to 350 years of age (84).
Why are the tips of my blue spruce turning brown?
If this is what you’re seeing, your blue spruce tree is likely suffering from needle cast disease. Once these needles turn brown, yellow, or red, they will likely begin to shed. Many homeowners that are experiencing needle cast will often describe their blue spruce as looking burned. What is needle cast disease?
How do you care for an old blue spruce tree?
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.
Should you trim the bottom of a blue spruce?
Trimming bottom branches of blue spruce creates a neater appearance, and makes it easier to reach underneath the tree to rake or apply mulch. Create even spacing among branches by eliminating branches in thick sections of the tree to match the spacing in thinner sections.
How much water do blue spruce trees need?
However, during periods of drought, be sure to give your blue spruce a good soaking with the garden hose to the tune of about 1 inch of water per week. A deep watering once per week is much better than a shallow watering four to five times per week.
Why are the lower branches of my blue spruce dying?
When entire lower branches on a spruce have died, the problem is more likely to be cytospora canker, Yiesla said. This fungus lives under the bark and destroys the vessels that carry water and nutrients, so the whole branch dries out and dies.
What does a diseased pine tree look like?
Symptoms: Needles begin to brown, yellow, or gray at the tip and will appear short and stunted. Small, black pycnidia (fruiting bodies) develop on needles, cones, or shoots. Cankers on stems and branches may also develop, as well as oozing resin. Causes: The fungus overwinters in infected needles, cones, and tissue.
What kills the tops of spruce trees?
Tip weevil, or white pine weevil, are insects that live their life cycle around pines, spruce, and firs.
What is the best fertilizer for blue spruce trees?
Slow-release granular fertilizer is the best choice and should be used near the root zone. To prevent burning from the fertilizer, you want to add two inches of water around the trunk. These spruce trees do not need to be pruned. However, you can prune to promote a denser foliage.