If your outdoor plants are not receiving enough light, then you can supplement natural sunlight with HID lights.  All you have to do is make sure that the lights are in a waterproof container.  You can cover the area with a tarp to keep the moisture off the light, but...

If you want your plants to receive the closest thing to sunlight, you want to use High-Intensity Discharge (HID) Lights.  The most common of these is the metal halide lamps available from our site.  These lamps produce a full spectrum of light colors, so you can use them for any...

High-intensity discharge (HID) lights are the best lights to use when growing plants inside.  This is because they offer artificial light that is very close to natural sunlight in wavelength and intensity.  There are two different lights available from us that are both HID types.  The first is the HPS...