bleeding trees ?

[ROLLACOSTA]

firstly i can all hear you all saying shouldnt he know this answer already
but sorry i dont question is why do some trees drip sap when pruned more than others ,if you prune a birch or walnut this time of year it will drip/bleed profusley yet an oak or plane etc wont ,is it something too do with ring porus /diffuse porus cells?
i have read many arb reports overhere in the uk and some people say it has no detrimental effects on a tree if it does bleed?while others say it does,thanks for any replies

MUST POINT OUT I TRY NEVER TOO PRUNE BIRCH

 

[Stumper]

Interesting question about porosity. My memory is that Walnut is Ring porous Maple of course is diffuse porous so i don't think that is the answer but I may be wrong. I don't KNOW THE REASON that certain species flow so much in the fall and spring when leaves are off-just that it is true. The sap flow is unsightly but apparently not harmful.

 

[Newfie]

If ya listen carefully, you can hear them scream.

 

[PRUNER 1]

birch can die from bleeding if they are overpruned, too many big wounds

 

[ROLLACOSTA]

PRUNER iknow birch hate too be pruned as they dont heal, but
but i dout they would die by bleeding too death ...then again .i may be wrong...

PS PRUNER IM LOOKING FOR A CLIMBER DOWN HERE IN SUFFOLK IF YOU EVER HERE OF ONE SEND ME A PERSONAL MESSAGE MANY THANKS

 

[Curtis James]

Look for anything Dr. Shigo wrote about it. He is amazing and from what I have learned it is not harmfull at all, but helpful. Maybe a little unsightly but no harm is done. Unless of course you over do it.

 

[blue]

ROLLACOSTA,
if your looking for a climber;
what ya payin
where are ya

 

[Acer]

I'm not sure if bleeding is harmful. I think the only problem might be that the sap can discolour later as various fungi move in, a bit like how aphid honeydew eventually turns black. This can look unsightly to some people.

I don't know how much sap a tree can lose without harm, but birch sap can be made into a nice wine. Ray Mears (he's a survival expert who appears on UK TV) recommends boiling up birch sap and pine needles to make a sort of tea. Now's the time to try it if anyone's interested.

 

[Lumberjack]

Originally posted by blue
ROLLACOSTA,
if your looking for a climber;
what ya payin
where are ya

Maybe this would help.

 

[blue]

Lumberjack,
cheers mate i never saw the post

 

[M.D. Vaden]

What I've explained in my website tree advice pages, is that bleeding fails to harm, because the mechanics of it do not differ from before the cut was made.

Before the cut, water was moving from point A to point B - it just was not visible. After the cut, water is still moving from point A to point B - only it's visible now.

I tend to find it interesting to watch.

The difference between a tree and a person - when a person bleeds, the supply is limited to the reservoir in the body. But the tree roots extend the reservoir to outside of that organism.

Trees are like this...

Multnomah Falls in the Columbia River Gorge - north Oregon.

This fall, like trees, can keep giving water, because it has a continuous supply provided to it (in general terms).