Squirting cucumbers build pressure inside their fruit and then fire their seeds away from the plant.

The longer version

As the fruit ripens, fluid collects inside it and the walls tighten, so pressure builds toward a breaking point. When the stalk finally detaches, the opening contracts and the contents are forced out in a fast jet, carrying the seeds along with it.

Launching seeds away from the parent reduces competition and keeps seedlings out of the shade cast by the adult plant. The same principle appears in several unrelated species, from pods that burst open as they dry to those that split at a touch, each using stored tension rather than muscle. The distance gained is modest compared with wind dispersal, but it beats dropping straight to the ground.

Where this entry sits

Plants and Trees gathers ordinary and surprising details about how green things live, from the tallest forest giants down to the moss on a garden wall. Expect notes on flowers, seeds, roots, leaves, fungi, and the quiet tricks plants use to spread and survive. The full list sits on the Plants and Trees page, where every entry is listed in order.