in my cheap world.. i would get rid of it.. and plant a quality tree

you can do a lot better than a crumby over planted.. invasive ... pear tree

ken

Wife likes it. :)

Just tell her 'it's going to die'. lol

Seriously, for the money spent to attempt a recovery which may well fail anyways, you could have a nice tree planted that doesn't have the problems or reputation of callery pear. And not have it drive you crazy waiting to see if the pear 'makes it'.

That won't fly. :) After the spores on the leaves fall off and assuming the spring is dry, wouldn't this issue just disappear? There must be some way to resolve it... Fertilizer (Fish/Kelp) will help promote new growth?

The fungus spores are present in your climate - they will definitely return in future years. Sure, some years are worse than others. Spraying fungicide on a mature tree is not something I would want to be doing for years to come. The kelp is a waste of money. (Prompting lots of lush, new growth on a pear may lead to fireblight, another common problem).

This problem has only occurred in the last 2 years and this being the worse. If the leaves die off, how can it occur again unless the conditions are similar?

Fungal spores can overwinter on twigs and branches on the tree and on any fallen leaves that have not been removed.

The only way to effectively treat scab is to spray before symptoms occur and again, as conditions warrant, periodically into the growing season. Best to alternate between two different fungicides as the organisms have an ability to adapt and build resistance against a single type.

The rust is harder to control as it requires removal of the host species (a juniper) which may or may not be located in your garden. But its damage tends to be more cosmetic although just as unsightly.

You will never be able to predict when or if these diseases will occur.....these things are just beyond our control. There is no point in doing anything at this time as nearly all fungicides are preventative in method, not curative, and it is too late to have any effect.

Personally, I am in that camp that says this is just wasted effort on something as egregious as an ornamental pear tree..........removal is your most desirable option :-) There are so many more beautiful flowering trees one could substitute for the smelly, invasive and structurally weak and disease prone Callery pear.

Interesting. This is unexpected. To me, a tree is a tree so I am not sure why one would so undesired. I guess at this point, it is possible it becomes healthier as it was for the first 13+ years of its life before the last 2 years. Or, it might not. Perm. fix is not a viable option given nature. I could replace with another tree but not sure it is worth the $1K ($600 or so for removal and then a new tree).

IT IS DISEASED .. ITS NOT HUNGRY ...

FORGET ABOUT FERT ... besides... its root mass is twice what you see above.. its getting anything it might need.. from the fert you dump on the lawn ...

there really is no point of going on with this.. based on mommas opinion ... just do whatever she must be obeyed insists ... even if it is a total waste of money ...

imo ... i wouldnt waste money on putting seaweed on mother natures tree .. who came up with that idea ...

ken

ps: you might want to get a couple more estimates .. you might find one that is twice as much.. and SHE might prefer such ...

We'd prefer to keep the tree but it sounds like it is out of our control at this point. That's what I am struggling to grasp.

"Trellis Rust" is potentially serious on flowering pear. Here's some good info:

https://treedoctor.msu.edu/sites/default/files/docs/Aug16_TrellisMgmtUpdate.pdf