Video narration
How tall can a tree grow? It’s not decided by one thing—it’s a mix of biology and environment. First, genetics: each species comes with a typical height range. A redwood is built to be tall; an apple tree isn’t. Then comes plumbing. Trees lift water from roots to leaves, and gravity plus dryness make that harder with height. If water can’t reach the top reliably, growth slows. Light matters too. Reaching the canopy brings more sunlight, but crowded forests can keep shorter trees shaded. Soil and climate set the budget: nutrients, temperature, and seasons affect how much new wood a tree can afford to build. Finally, structure. Taller trunks must support more weight and survive wind and storms—so mechanical stress puts a practical cap on height. Put it together: trees have maximum heights, and individuals vary with conditions—even within the same species.