The giant sequoia tree is native to central California. These trees are among the oldest living things on earth. And, as always with theatrical cartoons of the era, the attention to details is wonderful.
The adventures of tree surgeons (who do perform a vital service) was a popular comic foil at the time. Film funny men The Three Stooges also had a turn at the job.
The Giant Sequoia (the "Largest Hunk of Wood in the World") is listed as being just over 1 octillion years old (1,000,000,000,000,000,000,000,000,0000 year, 7 months, 3 days).
The animated tree was likely inspired by the live action characters seen in The Wizard of Oz, released six years prior, in 1945.