Corn Seedling Experiment: Blue Light Causes Poor Growth

Your experiment reveals a core principle: plants use red and blue light for photosynthesis, but blue-heavy light without sufficient red leads to compact, sometimes stunted growth. The droopy blue-light plant is a valid result—document it.

Why It Happens

• Blue light inhibits stem elongation.
• Red light promotes flowering and stem growth.
• Full spectrum (white/sunlight) balances both.

Don't "fix" the plant. The differential response is your data. Complete the 5 weeks, measure all plants, and report honestly.