Eli5: How a growing tree avoids growing branches into each other.

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Title. I’ve never seen a tree where two or more branches have collided while growing. How does the tree “know” where all the branches are while growing?

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Anonymous 0 Comments

The tips of plants put out a chemical that prevents buds on the side of the plant from growing out. Eventually there is enough distance between the tip and the bud on the side that the hormone doesn’t prevent the side buds from growing out, in this way you get somewhat regular spacing at the buds

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