Moving swiftly on, as this is water under the bridge now and i expect there's a statute of limitations on arboricide, i should mention a crime which was taken very seriously in days of yore: ringbarking. In case you don't know, this is where the trunk of a tree has the bark and underlying layer of vessels carrying sap and water removed all round, which kills the tree in the same way as ash dieback does - no more water or minerals get further than the ring and the tree dies of thirst. The Liverpool Care Pathway for trees in other words. This is something which i would assiduously avoid, and for that reason i eschew most bark- or cambium-based herbal remedies. Luckily though, trees have more to offer than their roots, bark, cambium or timber.
So here's the video:
The trees mentioned are:
Betula alba - the silver birch. Parts used: Leaves.
Tilia cordata - linden tree. Parts used: Leaves and fruit.
Sambucus nigra - elder. Parts used: leaves, cambium, blossom, berries. Mostly edible but some parts are poisonous.
Aesculus hippocastanum - horse chestnut. Parts used: leaves, nuts. Poisonous.
Crataegus oxyacanthoides - common hawthorn. Parts used: leaves, berries.
Sorbus aucuparia - rowan. Parts used: berries, sap.
Incidentally, this video failed to post on Facebook, so far as i can tell, this morning, so i ended up having to post it anyway. Another video should appear tomorrow morning, the hundredth as it happens, then it'll be Sophie Gray's birthday.