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Fall colour
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Author:  budreaux [ Tue Nov 18, 2003 3:07 pm ]
Post subject:  Hwy 4
Hwy 4 between I-20 and Graford show outstanding fall colors when the time is right. Haven't seen it in awhile. It's worth the drive.
Author:  dcluck [ Fri Nov 28, 2003 12:36 pm ]
Post subject: 
Does anyone else have red oaks that turn yellow before borwning and dropping? I'm begining to worry about whether about two of mine having oak wilt. :cry: The yellowing is following the pattern that's indicitive of oak wilt, but I'm not sure if this is necessarily conclusive. I'm fairly certain that they followed this same color pattern last fall, but I'm not 100% positive.

No other red oaks in our neighborhood are showing the same yellowing and mine are dropping early. One of the two has already lost 60% of it's leaves, the other about 40%. The two are about 60 feet apart and a neighbor's live oak which is roughly the same distance away is showing no signs of oak wilt symptoms.

Neither of them has been pruned since we've been here (since June 2002), althought they had been pruned away from the house at some point in the past. I haven't seen any outward signs of fungal matting underneath the bark of either tree. Would bark on an infected tree be easy to remove?

Based on all of this information, is this something I need to call an arborist in to take a look at?
Author:  The Ent [ Mon Dec 01, 2003 8:30 am ]
Post subject: 
Any chance the red oak is a northern red in stead of a shumard or Texas red? That's precisely the way a northern red or a hybrid that's half northern red, would behave in the soils here.
Author:  dcluck [ Mon Dec 01, 2003 9:54 am ]
Post subject: 
I haven't seen any good reference imges of Northern Red oaks. What's the best means of positively identifying them? The leaves look exactly like what I've seen in reference photos for Texas Red oak - slight more pronounced cut in the leaf pattern than a Shumardii. Definitely didn't look like Southern Red. I've taken two leaf samples to two nurseries and both said they looked like "red oak" for whatever that's worth.

Both of the trees have looked great in the spring and summer. No leaf discoloration of any kind, they fill in fairly quickly, lots of acorns, root flare well exposed.. just this odd fall behavior for what I'm assuming they are.
Author:  The Ent [ Mon Dec 01, 2003 2:36 pm ]
Post subject: 
Well from what I have seen, northern reds have a more pronounced cut to the leaf separations, and the general structure of the tree is a bit more triangular (the canopoy shape) rather than a rounder canopy on the southern, shumard or Texas reds.

I'd just make sure the site is getting organic care and baby them with the sick tree treatment and see what happens.
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