Advice on tree problem

M

Matt E

Hi,

I live in Draper, Utah, and planted two honey locust trees in my yard in 2006. They've done well, growing from about 3/4" caliper to 5" over the past 8 years, and from 8 feet tall to 20-24' tall.

This year they looked great but a week ago (mid-June) I noticed the leaves of a couple limbs on both trees had turned yellow, and today I noticed that most of those leaves have fallen off, and many of the remaining leaves have turned brown. The rest of the tree looks pretty healthy, but maybe a touch dry. The only unusual thing I can think of is that about 2 weeks ago I left a hose on overnight near the trees.

Honey locusts normally do very well around here, so I'm hoping someone can diagnose the problem for me so I can save them.

Thanks for your help!

Matt
 
Sorry I can't really see in the picture are these branches interior, exterior, tops, tips, etc.

I know sometimes:
-We get aphids (I hope that's right I'll have to check to be sure), shake the tree really good see if bugs rain down.
-I've seen interior branches that aren't pulling there weight for the tree so they die
-Honey locust around here grow as much dead wood as growth it seems
-We also ace cap honey locust for something but I'll have to get back to you on what that is. Sorry drawing blanks tonight

Questions:
-Is it a cultivar, if so which?
-What are the branch diameters?
-Not likely if it's both trees but did you look for girdling roots? Sounds like they're growing quick.
-What's the sulphur level in your soil?
-Did you look for any wood pecker damage? I've seen them, or the bug they're after do a number on single limbs.

These are likely things you've checked and thought of but it's where I'd start hope it helps
 
KevinS said:
Sorry I can't really see in the picture are these branches interior, exterior, tops, tips, etc.

I know sometimes:
-We get aphids (I hope that's right I'll have to check to be sure), shake the tree really good see if bugs rain down.
-I've seen interior branches that aren't pulling there weight for the tree so they die
-Honey locust around here grow as much dead wood as growth it seems
-We also ace cap honey locust for something but I'll have to get back to you on what that is. Sorry drawing blanks tonight

Questions:
-Is it a cultivar, if so which?
-What are the branch diameters?
-Not likely if it's both trees but did you look for girdling roots? Sounds like they're growing quick.
-What's the sulphur level in your soil?
-Did you look for any wood pecker damage? I've seen them, or the bug they're after do a number on single limbs.

These are likely things you've checked and thought of but it's where I'd start hope it helps
Click to expand...

Ok a correction I was a bit sleepy last night. We ace cap to treat for 'Honey locust plant bug' which is like an aphid.

Another question or 2
What aspect are the limbs on (north, south,etc) or are they different?
Do they face each other kind of close or are they spread apart from each other?
You said you left the hose on for a while was it the first drenching they've seen? I'm trying to see if you're in a hot dry drought area or a damp rainy kind of area
 
ps the right limb on the right tree in your pic looks like it could make a move as a competing leader limb if not reduced, is that an issue or are you going for as wide a crown as possible? Not trying to get in your business just can't not see those branches sometimes
 
Matt E said:
Hi,

I live in Draper, Utah, and planted two honey locust trees in my yard in 2006. They've done well, growing from about 3/4" caliper to 5" over the past 8 years, and from 8 feet tall to 20-24' tall.

This year they looked great but a week ago (mid-June) I noticed the leaves of a couple limbs on both trees had turned yellow, and today I noticed that most of those leaves have fallen off, and many of the remaining leaves have turned brown. The rest of the tree looks pretty healthy, but maybe a touch dry. The only unusual thing I can think of is that about 2 weeks ago I left a hose on overnight near the trees.

Honey locusts normally do very well around here, so I'm hoping someone can diagnose the problem for me so I can save them.

Thanks for your help!

Matt
Click to expand...

Fall Web worm?
 
Usually Honey Locust is attacked by Mimosa webworm. I'm leaning toward Honey Locust Plant Bug and possibly scale. Water woes may also be in play.
 
oldoakman said:
Usually Honey Locust is attacked by Mimosa webworm. I'm leaning toward Honey Locust Plant Bug and possibly scale. Water woes may also be in play.
Click to expand...

Sorry what do you mean by water woes? I may know it by something else or be in the dark on this.

Thanks
 
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