Help with oak

[veners]

Can anyone help with this bark deformation? The tree is a mature Turkey Oak but may be hybridised with a Cork Oak (if poss???) there are several areas of bark deformation as in the pictures, it is on the main stem and on some substantial laterals.

 

The tree is growing adjacent to a road and within a children’s play area .

 

Does anyone know what this is and the potential consequences?

Many thanks in advance

[swinny]

Some of the growth looks epicormic? Sprouting from the stem.... whats it like in the crown?

[veners]

On open sections of the low laterals, difficult to see up into the crown at this stage, but the crown itself seems healthy and dense without any dieback, the tree has historically dropped 1 fair sized limb.

[Callum]

Hi

 

Could it be Stereum or Bulgaria canker-rot ?

[Ian Haynes]

Can anyone help with this bark deformation? The tree is a mature Turkey Oak but may be hybridised with a Cork Oak (if poss???) there are several areas of bark deformation as in the pictures, it is on the main stem and on some substantial laterals.

 

The tree is growing adjacent to a road and within a children’s play area .

 

Does anyone know what this is and the potential consequences?

Many thanks in advance

 

Hi Veners,

 

Yes, Turkey Oak and Cork Oak do naturally hybridises and the result is commonly called a Spainish Oak.

 

One of the most commonly know hybrid is the Lucombe Oak.

 

Not 100% sure about the deformation on the bark.

 

Thanks,

 

Ian

[Tony Croft aka hamadryad]

Interesting, just the kind of thing i get motivated over!

 

You have a massive rib formation at arrow 2, suggests either a dead zone beside it or a deep crack in the stem being compensated for, supect dead area of cambium directly besides it. What i believe is happening is that a strip/canker type situation is creating dead sections of the circumferential area and the healthy chanells through the zones are growing activley hence the deformations. The tree is cleary in a lot of bother and will be decaying before long behind these stip cankers.

 

ive just dug one of my big reference books out thats not seen daylight for a long time, shall return and give you a suspect for arrow 1:thumbup1:

 

thanks for the post

 

[swinny]

Iwas going to say dieing/restriction of the cambium layer which could lead to dieback in the crown etc.... also the fact that epicormic down on the stem meaning the tree knows somethings wrong in crown and trying to compensate....

 

 

Would i have been far out then? (wish i had posted earlier but glad i didn't and live in the shadows )

[Tony Croft aka hamadryad]

Bulgaria iquinans appears to be the most likely candidate for the canker, but im not entirely happy with that assertion. But it will suffice, symptoms similar, cause and effect.

[veners]

Cheers guys, we are going to carry out an aerial inspection and remove one of the affected limbs and have a look inside to hopefully give a better indication, will keep everyone up to date with our findings.