fir bonzai, nodules on branches and no new growth,

[altwa]

I have a 40 yr old fir tree about 2 ft tall, for last few years there is formation of nodules on all the branches , and there is almost no new growth every year, I need help on how to treat this problem, so far there has been very little dying of the branches.
the nodules are about 1/2 inch in diameter, soft pulpy centers, not much pitch inside

apreciate any advice

[manofthetrees]

have you been fertalizing this tree.sounds to me it just doesnt have enough energy to sprout but enough to keep itself alive

[altwa]

Thanks for your reply.

Yes it is fertilized regularly, growth is abnormal nodules may be galls
it is fully around the twig and about 1/2 in diameter.
I am looking for a cure as I think it will eventually kill the plant

[kdodds]

Picture's worth a thousand words.

[manofthetrees]

yes especially of the nodes you spoke of it may be an insect causeing it