I very much wanted a lot of plants in my bedroom, where I had a corner that was perfect for shelves, but significantly less than perfect for lighting, so I have to “supplement” with grow lights. (Actually 100% of those plant’s light comes from grow lights, so I wouldn’t call it ‘supplimental.’)
If you have a dark apartment or a corner that doesn't get much sun, you don't need a professional setup to keep plants alive. Here is a straightforward way to use grow lights.
Choosing the Right Light
When shopping for bulbs, you’ll see a lot of technical terms. You don't need to overthink it. Keep these three points in mind:
- Stick to LEDs: They are energy-efficient, long-lasting, and they don't get hot like older bulbs. This allows you to position them closer to your plants without the risk of heat damage.
- Choose "Full Spectrum" White: Avoid the purple (or "blurple") grow lights. They can be hard on the eyes. Look for "full-spectrum" white LEDs. They provide the light plants need for growth but look like natural daylight in your home.
- Look for a High CRI: CRI stands for Color Rendering Index. A rating of 85 or higher will make your plants look green and healthy, rather than washed out.
Positioning and Usage
The way you set up your lights is just as important as the bulb itself.
- Distance: Light intensity drops off quickly with distance. For most setups, 6–12 inches above the plant is a good starting point. If the light is too far, it won't be effective; if it's too close, you may notice some leaf bleaching.
- Placement: Position the light directly above the plant to encourage even, upright growth. Side-lighting often causes plants to lean toward the light source.
- Use a Timer: Plants need a natural cycle. Use a simple timer or smart plug to keep them on a 12–14 hour schedule. This gives them the "daytime" they need to grow and a "nighttime" to rest.
Maintenance and Troubleshooting
Even with the right setup, you may need to make small adjustments:
- Watch for Burn: If you see brown or crispy spots on the leaves closest to the bulb, the light is likely too intense. Move the fixture a few inches further away.
- Clean the Bulbs: Dust buildup blocks light. Give your bulbs a quick wipe whenever you clean your plants' leaves.
- Check Your Watering: Plants under grow lights often grow more actively than those in low-light conditions. They may require more frequent watering, so rely on checking the soil moisture rather than a set schedule.