Hi All!,
I’ve grown pears since 2010 in NY Zone 5b but never saw anyhting like showed up this year on some pears that I planted in Queens County NY zone 7B.
These were 2 year old whips when planted 2 years ago.
Can anyone I.D. this growth and any treatment suggestions?
Thanx
Mike
Think I have the same thing. Could it be Pear Psylla egg sacks?
European Pear Rust
Pear trellis rust
My first idea was to congratulate you, that you’ve been spared until now.
It is indeed pear rust fungus Gymnosporangium fuscum and here in Central Europe, are encouraged by arborists and professional fruit growers to get rid of all ornamental junipers and only keep our native juniperus communis which is not a host.
If you can, check branches of all junipers around you for the source of spores and remove them, or alert whomever owns the plants.
Treatment?
When would I spray Myclo, Mancozeb, or Cholorothalinol, I gave them all. My guess is at the same time as I spray Cedar Apple Rust
Anyone with actual experience on pears?
Thanx
Mike
I would not worry much about it. Can you spray the cedars instead of the pears? Cedars are a host and if you eliminate them you eliminate the disease. Trellis rust is not quince rust.
Am wondering if this can seriously stunt growth of newer, small trees. That’s what happening with all three such trees. Few of their leaves have the “bumps” but all leaves are in poor shape and falling off early. Very little new growth on these.
All pears have had some fungus sprays but not Immunox.
Yes, the fungus can impact the pear if the spread is really extensive and/or the tree is very young and weak or old and sick.
And @MES111 , yes, you can spray. Generally 4 times a year at vey precise intervals. It will generally do little good. The actual experience on pears is: we remove the leaves that are affected and dispose of them. It has any effect only if done before mid August. We get rid of the hosts if the pear (and other nearby ones) is more important to us. Because that has the actual effect of stopping the vicious cycle.
If you value the host more than the pear, spray it. Again and again and again, etc…
If the pear is healthy and growing well, it should tackle a bit of rust just fine. So a good access to nutrients and pruning for air-flow is half of the success. The other half is…
Myclobutanil/Immunox works really well for me when I stick to the schedule. It can also prevent scab and maybe something else? I don’t have the label handy. If it’ll cover what the other sprays do you could switch to it next year.
Pear rust is everywhere this year. A lot of the trees in Washington has it right now. Pears and apples
The sprays used here are often those that work also against scab. But if you have a source (winter host) nearby, get ready to spray every 2 weeks from just before flowering time throughout spring. That’s when the spores are flying around.
Thanx for all repplies,
Removing the hosts could pose a problem!
These pears are in a residential neighborhood and I don’t think that I would get too many 
if I were to start hacking at the junipers and evergreens that are all over the place 
.
Mike
Yes, that can always be a problem, just like bad and calous neighbours.
I would still try to walk around and try to look for the typical jelly-like orange fungus on junipers in the vicinity.
