Bonsai Forest
Omono
Found at Work
Cedar Apple Rust?… or Invasion of the Body Snatchers Space Goo?
- Thread starter Bonsai Forest
- Start date
Found at Work
Nybonsai12
Masterpiece
Apple cedar rust!
Dav4
Drop Branch Murphy
- Messages
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- USDA Zone
- 6a
That fungal goobody looks happier and healthier than the juniper 
!
!
Yup. Fact of life with ERC unfortunately. I’m managing through a few spots on one of mine, didn’t hit it early enough this year and some got established. I’ve gotten each spot before reaching this stage but it’s definitely annoying. Not enough to make me give up on ERC though!
Orion_metalhead
Masterpiece
got some today on mine. going to treat tomorrow.
Bonsai Forest
Omono
What will you treat with if you don’t mind me asking?
I know you didn’t ask me but I use a combo of Neem Oil as an in between application (not sure it’s really doing much) and Bonide’s Infuse systemic product.
The Infuse has definitely knocked the rust back hard the two times I have checked on my trees after heavy rains and found the wet, globular precursors to the pictured mature rust fungi you posted. However it has persisted as little rust colored lumps on the tree and today was the second time I had to apply so I don’t think the systemic aspect has really kicked in yet. This is the first year I am treating with it the tree is in its third year.
It seems this affliction is a tough nut to crack. Likely an exercise in management rather than eradication but I am optimistic. I have a crabapple I am stubbornly working with as well hence the prevalence but it’s pointless anyway as there are mature cedars as well as Beadford Pears everywhere so there’s no avoiding it.
shohin_branches
Shohin
I bought a Hawthorn last year and the seller didn't disclose that it was so badly infected with cedar apple rust. At the collection I volunteer at the curator has us use daconil granules on the hawthorn but I haven't found any at the local stores so I'm looking for some other options.
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Joe Dupre'
Omono
My best ERC had two bouts with the affliction 2 years ago. Full strength Fertilome 3 in 1 painted on. It never came back. Fingers crossed.
Bonsai Forest
Omono
Much appreciated for the information
vp999
Omono
I read that Shimpaku cant get this disease..is that correct ?
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Orion_metalhead
Masterpiece
i use bio-advanced 3in1, the liquid version. worked last year. maybe ill try full strength brushed on as mentioned above too.. havent done that!!
Dav4
Drop Branch Murphy
- Messages
- 13,113
- Reaction score
- 30,189
- USDA Zone
- 6a
My shimpakus never had CA rust, while other junipers in my collection did, and mainly RMJ
Orion_metalhead
Masterpiece
My shimpaku has not had it. My blue rug has had it and, obviously, my ERCs have had it.
Paradox
Imperial Masterpiece
I dont think neem oil is going to be very effective on cedar apple rust
Get some daconil or copper based fungicide
I got rid of it when I caught it early, found the nodules on the tree before they became the goo monsters and cut them off.
Yeah I mentioned I was dubious of whether it was helping at all and I believe the heavy lifting is being done by the Infuse. I ordered fertilome 3 in 1 and plan to paint it on, hopefully that does the trick .
Orion_metalhead
Masterpiece
this am.
vp999
Omono
Looks like it wants to air layer the tree in 2 sections lol.
