The root system of Old Tjikko is estimated to be 9,567 years old,[1][2] making it the world's oldest known Norway spruce.

It stands 5 metres (16 ft) tall[3] and is located on Fulufjället Mountain of Dalarna province in Sweden.

[5] Also, each winter, heavy snow may push the tree's low-lying branches to ground level, where they take root and survive to grow again the next year[1] in a process known as layering.

[9] Nature conservancy authorities considered putting a fence around the tree to protect it from possible vandals or trophy hunters.

[10] On July 1, 2024, it was reported that the Stockholm-based art studio Goldin+Senneby were building a climate-controlled installation at a new hospital campus in Malmö, Sweden.