Eli5: Why and how do knots form in trees? 72 viewsJune 15, 2021 Question34.21K June 12, 2021 2 Answers Eli5: Why and how do knots form in trees?In: Biology data15cool commented June 12, 2021 Something to note beforehand: Wood has a “direction” to it, that is that the grain goes along the length of the trunk or branch.As the tree grows branch grow out from the trunk. The grain orientation of the trunk is vertical, whilst the branch grain follows the branch.When the tree continues growing and upper branches develop, lower branches become useless and die off leaving their stump. As the tree grows further this stump becomes incorporated into the trunk, becoming the knot.This stump had the original branch grain direction and that’s why when cutting though wood, encountering a knot can be hard to deal with. [deleted] commented June 12, 2021 [removed] 0 AnswersActiveVotedNewestOldest Register or Login Other Questions You Might Be Interested In:: Dual-Channel RAM in computersHow do the presumably magnetic balls in this baby rattle only repel, and not attract each other?How does a pyrolysis waste disposal machine work?In old NES games, why would graphical glitches cause graphics to turn into numbers?what are emotions?what exactly is a “booster” shot?