Horrible slime on silver birch

[Stephen Blair]

Something floating around stuck and now living on the sap, David will be along with it in Layman terms for you

[skyhuck]

Caused by the sap bleeding out.

 

I pollarded a Birch just before bud burst a few years back, it bleed like hell, looked a right mess, turned assorts of colours, I was sure it was going to die, but it came back lovely, its right by a main road, so I pass it often, it looks great now

[treefolk]

Took a silver birch down this time last year and left a cone sitting on the stump. Came back to grind it the following week and it was oozing with slime like in your pic. Under the cone was full of a weird smelly cloudy mould. Went everywhere when I ground it out including in my mouth. Nice