Understanding How Plants "See" Light
Did you know that plants can see light?
Do Plants Have Eyes?
Light is absolutely vital to plants. Since it is so integral to food production and survival, plants in the wild must be able to compete for it. In order to do this, they have an advanced sight-like system where phytochrome pigment molecules in the leaves act like the photoreceptors of the eye. The tip of the plant acts like the eye itself, and the shoot of the plant moves signals like the brain.
How to Tell if Your Plant is Not Getting Enough Light
Providing greenhouse crops with high-quality lighting with proper intensity, distance, temperature, and exposure time is critical to crop success. If your plants are not growing the way you expect them to, you could have insufficient lighting. If sunlight is too scarce for plants, they may need grow lights to ensure they get enough light to keep growing.
- Leaves losing dark green color and becoming lighter (chlorophyll loss)
- Overall plant size will be stunted
- Elongation of the stem between internodes
- Growth of larger leaves (diverts energy away from productive growth)
- Plants may start to lean towards the nearest light source in a desperate attempt to reach it