August 13, 2026

Transpiration is the process by which plants absorb water through their roots, move it upward, and release some of it as water vapor through the leaves. In lettuce, this process helps with cooling, water movement, and nutrient transport, making proper temperature, humidity, and airflow important for healthy growth.

Etiolation happens when plants grow under insufficient light, causing them to stretch, weaken, and often turn pale. In lettuce, this can lead to longer stems, loose growth, and poor plant structure. Understanding how light affects plant development helps growers produce healthier, more compact crops.