What the hell is this on my hawthorn?

atlarsenal

Shohin
Messages
484
Reaction score
1,037
Location
Kennesaw, GA
USDA Zone
7b
It’s butt ugly and I’m going to have chop it way back to get rid of it! It’s just a little seedling, that’s 3mm wire in the pics.
 

Hack Yeah!

Shohin
Messages
349
Reaction score
375
Location
Marietta, GA
USDA Zone
7b
If it's just a seedling just unwire it and let it grow, maybe it'll produce some interesting opportunities
 

penumbra

Shohin
Messages
269
Reaction score
203
Location
Front Royal, VA
USDA Zone
6
Looks like a gall. They are most commonly caused by a wasp that lays an egg and the stem swells around it.
 

choppychoppy

Chumono
Messages
598
Reaction score
1,056
Location
SE USA
Looks like cedar-hawthorn rust.

Symptoms on hawthorn: Cedar-hawthorn rust causes discoloring and yellow to nearly black spots on the leaves, fruit, petioles or new twigs. These spots contain black pimple-like fruiting bodies that produce spores.
 

Mike Hennigan

Chumono
Messages
669
Reaction score
915
Location
Ithaca, NY
USDA Zone
5b
Looks like cedar-hawthorn rust.

Symptoms on hawthorn: Cedar-hawthorn rust causes discoloring and yellow to nearly black spots on the leaves, fruit, petioles or new twigs. These spots contain black pimple-like fruiting bodies that produce spores.
So in other words it looks nothing like cedar Apple (hawthorn) rust? ?. Definitely looks like a gall of some sort IMHO.
 

choppychoppy

Chumono
Messages
598
Reaction score
1,056
Location
SE USA
So in other words it looks nothing like cedar Apple (hawthorn) rust? ?. Definitely looks like a gall of some sort IMHO.

Yep the symptoms are different and both diseases have different symptoms on junipers as well. This looks like what the symptoms are for the Hawthorne.
 

Mike Hennigan

Chumono
Messages
669
Reaction score
915
Location
Ithaca, NY
USDA Zone
5b
If it’s a gall it probably won’t kill the tree or branches but later on you will be left with big bulbous clumps on your branches. So if the health of the tree is in concern I don’t think pruning them off right now is essential.
 

Mike Hennigan

Chumono
Messages
669
Reaction score
915
Location
Ithaca, NY
USDA Zone
5b
Yep the symptoms are different and both diseases have different symptoms on junipers as well. This looks like what the symptoms are for the Hawthorne.
Did you look at the pictures? It’s a growth in the woody tissue, not on the leaves. Leaves look pretty much fine.
 
Messages
1,219
Reaction score
512
Location
MD/DC
USDA Zone
7a
Maybe you can air-layer one for a mini sumo? Sorry, just had to suggest air-layering.
 

Similar threads


Top Bottom