Guttation in Plants: Why Leaves Drip Water and What It Means

Water droplets on leaf edges overnight? That's guttation—a natural plant process, not a problem. Understanding it prevents unnecessary worry.

How Guttation Works

Daytime: transpiration pulls water up through stomata (leaf pores). Night: stomata close, but roots keep absorbing water. Pressure builds, forcing excess moisture out through hydathodes (specialized leaf-edge structures). Result: bead-like droplets.

Guttation vs. Dew

Dew: Atmospheric condensation on plant surfaces. Guttation: Plant-emitted moisture from within.

When to Pay Attention

Guttation usually indicates healthy hydration. However, if combined with over-fertilizing, mineral deposits (white crust on leaf tips) can burn foliage. Reduce fertilizer if you see white tips—don't reduce watering.