What kind of diseases affect blue spruce trees?
What kind of diseases affect blue spruce trees?
What kind of diseases affect blue spruce trees? 1 Needlecasts. As the name implies, trees with needlecast diseases shed needles. 2 Tip blights. Tip blights are fungal diseases that typically cause dieback to new,… 3 Canker diseases. Canker diseases are caused by fungi that infect branches or the main stem…
Why are the needles falling off my blue spruce?
I have a dwarf blue spruce that is about 10 years old, which has begun dropping needles at an alarming rate. The bottom branches are bare and dead, and the disease has spread to all but this year’s new growth. The needles turn brown, and just touching the tree causes them to fall off.
Is it OK to remove branches from a blue spruce tree?
Removing affected branches is usually the best action to improve the tree’s appearance and slow the spread of disease within the tree. For insect or mite issues, insecticides or miticides can be effective, however selection of the proper product and timing are critical. Should we continue to plant blue spruce trees?
What makes a blue Atlas cedar tree droop?
It is susceptible to bark beetles, which may tunnel and eat through the tree bark, possibly bringing fungus or bacterial pathogens with them. Otherwise the tree is rather hardy and resistant to disease. The branches are thornless and droop as they grow. This contributes to the pyramidal shape of the tree.
What kind of disease does a blue spruce have?
Recent wet weather years have been especially hard on spruce trees, as evidenced by the number of dying trees visible in local landscapes. A common fungal disease, Cytospora canker generally affects older blue spruce trees but may also infect Norway spruce.
How long does it take for a blue spruce tree to die?
It can take up to 15 months for the needles to show visible symptoms after the initial infection. Young trees may be killed by this disease, but usually branches die off after 3-4 consecutive years of defoliation, causing trees to look disfigured.
What to do if Blue Atlas cedar has tip blight?
The lower branches are the first to be affected. Tip blight is not easy to control especially in older trees. The best remedy is to prune back the infected twigs, needles and cones to the healthy tissue as soon as tip blight is suspected. Prune when branches are dry since the spores can spread on wet branches.
Why are the needles on my Blue Spruce turning brown?
Another fungal disease affecting spruces is Rhizosphaera needlecast. Symptoms may first appear in mid- to late-summer as yellowing of the innermost needles on the middle to lower sections of the tree. These needles change from yellow, to brown, or purplish-brown and eventually fall off the tree.