Is there any salicylic acid in willow sap?

Is there any salicylic acid in willow sap?
I know it's in the bark, I don't know whether any is in the sap.

Violet2008-09-16T10:13:48Z

Favorite Answer

Yes, it is present in the sap, roots, leaves and even in the flowers. Every part of the plant has it, in varying degrees.