Adjusting Height on Grow Lamps Changes Light Delivery

Lamps that allow you to raise and lower them on the same fixture are handy for growing plants with different light requirements. Lowering the lamp reduces the light footprint but increases the density of light delivered. Raising it increases the light footprint but lowers the light density.

This is how you can use the same lamp to grow a full-sun plant and a shade-loving plant.

Gardening Under Lights Book