Young plants need lots of light to grow, but when started indoors, natural isn't always best. Learn seedling light requirements – and when to give them a boost.

Whether you use PPFD or another metric, be aware that light intensity decreases rapidly with distance. Grow light manufacturers usually list the distance where the PPFD rating was measured.

Whether you're tending to houseplants or starting your own seeds, here's how you can use, choose and shop for grow lights.

When to use a grow light Jarema Osofsky, a plant stylist, landscape designer, and owner of Dirt Queen NYC, recommends using grow lights for your houseplants if you live in a very low light space ...

Which? Gardening experts reveal the best grow lights for UK plants. We explain how to use and position lights to help grow sturdy seedlings on your windowsill in winter when natural light levels are ...

Warm vs cool? "Full-spectrum?" LED, CFL, or HID? Here's what you need to know about indoor grow lights for starting seeds, gardening inside, or houseplants.

Learn how to build a DIY grow light stand with wood for your indoor plants to thrive. This DIY plant shelf with grow lights is a simple project to get comfortable using tools.

Special fluorescent light bulbs generate radiation similar to natural UV light, and were used in the study. Growers put the plants under 40W Westinghouse FS-40 Sunlamps 10 inches from the canopy.