|I have an established Dwarf Alberta Spruce that is turning|
brown and dying from the top down. The problem began
in the winter and has accelerated this spring. I have
found no insects on the plant and the remaining part of
the plants appears healthy. I have removed the dead
portions twice and it continues to die. I this is a disease
will it spread to other nearby plants? If I can halt the
problem will the plant regrow a top?
|Top dieback is usually a signe of a borer infestation. Other sypmtoms are "sawdust" or holes visible in the wood. Also check for swellings, cracks, or other symptoms of damage/disease that might interfere with the movement of water to the top of the tree. You'll need to remove the borer/canker/gall from the tree and train a new branch to a stake, so it can become the central leader of the tree. If none of these ideas cover your situation, have a professional consultation.|
It may also be that the tree roots are outgrowing the space they're in, but that usually causes general dieback of all branches, not just the top. Best of luck!