1
Giant Sequoia
Sequoiadendron giganteum
The most massive tree on Earth by volume, an evergreen conifer of the western Sierra Nevada whose fire-blackened trunks can outlast civilisations.
You're looking for 12-letter trees containing U — here are 3 matches, each linked to a full profile.
List of 12-letter Trees that contain U
2
Norway Spruce
Picea abies
A tall, conical evergreen spruce of northern and central Europe, widely planted for timber and famous as the traditional Christmas tree.
3
Quaking Aspen
Populus tremuloides
The most widely distributed tree in North America, famous for its shimmering golden autumn groves and for forming the largest clonal organism on Earth.
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