This beer Grylls achtergrond contains
mahonie, mahonie boom, sitka sparren, sitkaspar, picea sitchensis, beuken, beuken boom, and beuk.
There might also be
douglas spar, douglas fir, gemeenschappelijke bamboe, bambusa vulgaris, amerikaanse witte berk, papier berken, paperbark berk, kano berk, betula cordifolia, papierberk, paper birch, kano birch, and betula papyrifera.