Dying incense cedar tree
Hi. I have an incense cedar tree that has been browning from the bottom up for several years. I’ve talked with two arborists, but I’m getting conflicting information. I’m hoping you can help. Both arborists suggest doing annual fungicide injections. One of them wants to pair the fungicide with a fertilizer injection called Nutra Boost (it’s injected into the tree) starting immediately. The other wants me to fertilize twice a year with a fish oil fertilizer that I purchase myself. They both want me to water the tree. One says to use the soaker hose for 1/2 an hour every other day. The other says to water deeply (one inch) several times per week during hot spells. Less when the temps are more moderate. What do you suggest I do? I read an article from 2018 that mentions your advice. It said to water slowly for 6 hours every other week, and to fertilize in the fall, and didn’t mention any injections. I’m very confused. My incense cedar is about 22 years old. Approximately 6 feet around near base. I also have a red cedar that is similar age, and starting to show signs of stress. Some sap coming out of the bark. Thank you for helping me!
Multnomah County Oregon
Thank you for the info. Neither arborist mentioned canker disease. One of them told me that browning from the bottom up typically indicates a root disease. And that it was a fungal disease of some kind. He also said, the tree is shutting off growth to older branches while maintaining growth on newer branches.
He said that was a typical sign of root stress. As far as the Nutra Boost, he said it was ok to inject it directly into the tree even in hotter months. It’s only the in-ground fertilizers that make the tree need more water.
Also, they both said there’s no guarantee that the fungicide will help.
I’ve always been told it was an incense cedar. That’s also what one of the arborists called it. Unfortunately I don’t even remember seeing cones on the tree.
It’s hard to tell. But thanks for the additional link. Do you have an opinion after viewing the pictures?
Also, what did you think about Nutra Boost injections directly into the tree? The arborist said that only in-ground fertilizer makes the tree need more water.
I’m still hoping to hear what you think about Nutra Boost being injected directly into the tree?
But also, here is a close up picture of the cedar branch. It looks like Incense cedar to me. Wondering if you can tell?
Thank you again. I'll contact the arborist to see what he says. The only thing he originally told me was that it was a fungal disease of some kind, and that it was in the roots. I think he thought that because it was browning from the bottom up. Neither arborist mentioned Canker disease.
It's very confusing to get so much conflicting information, even with the amount of water that's needed! I would love to save this tree, but I'm not feeling very confident that an annual fungicide injection is going to help. And knowing that Portland isn't the right climate for the poor tree makes me wonder if I should just have it cut down, and put it out of it's misery. I planted the tree when it was very small. They were giving them away while I was at Breitenbush. I also planted a maple tree, that ended up being too close to the cedar. I had it cut down last year in an effort to save the cedar. I guess it's possible that the roots got tangled/damaged because of how close the trees were to each other. But I really don't know.