Sam, Clement, Resin and bboy, thank you very much for your answers. All three P. menziesii should be of almost exactly the same age. Is it a possibility that genetic variances between them caused one's bark to mature faster? It is quite likely that the third one is P. pinaster since that tree used to be planted on small scale for forestry around where I live. Thank you for the compliment, Sam. :) Taxus baccata is a conifer which is wild growing here anywhere; presumably because of its extensive use for hedges. Close to the one I found were numerous "normal" (single coloured, dark green ones) so this one catched my eye immediately. This one has smaller, more sickle shaped leaves which are green on the inside and bright-yellow across their edges. This post was edited by liopleurodon on Fri, May 17, 13 at 5:23

Sorry, # 3 is not a Jade tree, Rachel is correct, it's a variegated Portulacaria afra (unrelated to Jade). Last an Aloe maybe called Walmsey. The #2 plant is tropical, requiring high humidity, quite different than the last 2 which are succulents.

Crassula ovata ‘Minima’ aka mini jade

I skimmed on this discussion, and saw something: [https://www.houzz.com/discussions/distressed-white-wood-tile-dsvw-vd~4046884[(https://www.houzz.com/discussions/distressed-white-wood-tile-dsvw-vd~4046884)