This depends on the type of plant, size of plant, and how many plants you are trying to grow.  A single light might be appropriate for a small pot with a single plant or a small seedling tray.  As plants get larger or the required coverage area expands, more lights may be needed.  Generally, if plants are growing well and have a compact, robust structure, they are getting enough light.  If plants are weak, with elongated stems and many small leaves, this may indicate additional light needs to be provided.  Up to eight LED Grow Light fixtures may be connected in series by using the integrated cords and receptacles in the fixtures.  Our LED Grow Lights come in several forms, which may be mixed to provide more light. 

Set up was simple and took less than five minutes. We just had to insert the post into the garden base, followed by inserting the light into the post (both clicked in to let us know that they were in properly). After we plugged in the pump cord and power cord, the touch screen lit up with a &#;Quick Plant&#; page to let us know the next steps. It also gives you an estimate of how many days until growth, the water level, and when plant food is needed. We also appreciated the included &#;Trellis System&#; that is also easy to click in an install—like most trellises, this is to help support the plants as they grow taller.

Designed to be mounted flush or hung against a ceiling or wall, the Feit Electric Dual Grow Tube Light is meant to replace traditional greenhouse lighting and delivers a full spectrum to help achieve optimal results for a variety of plants and flowers. The energy-efficient LED bulbs have low heat emission, so you don’t have to worry about burning your plants&#; leaves. The bulbs emit nm of blue light and nm of red light, an ideal combination that encourages plant growth and photosynthesis.

Similar to the AeroGarden Bounty Basic, the Click & Grow is an all-in-one system that keeps your plants thriving with both water and light, with little effort on your part. However, if you are looking for a smaller system for a few herbs, we love the Click & Grow, for its simplicity, and compact footprint. We also tested this product in our lab for three months and found it very easy to put together, living up to its name. Although it required a little bit more than clicking and growing, we just had to insert the pods, place the clear domes on top of them, pour water into the basin, and plug in the power cord.

We researched the top-rated grow lights available online, ranging from as simple as adding a lightbulb, to a full indoor garden system that does all of the work of taking care of your plants for you. We then set up and tested several of these options in our own homes and at the lab for several weeks and up to three months in some cases. We then evaluated their size, wattage, bulb type, ease of setup, and overall effectiveness. Here are the best grow lights for your plants, backed by our thorough research and testing.