How much light is needed? What is Low, Medium, and High light?

Understand lighting

If plants don’t get the right amount of light they can’t make chlorophyll which is vital for photosynthesis, the process that allows plants to absorb energy from the sun. But, not all plants need the same amount of light to survive. Sun-worshippers such as crotons will sulk and fade if they don’t get enough direct sunlight, yet others like ferns will just bake if left in the sunshine. The key, as it is with water, is to know what your specific plant needs to be happy.

In general, indoor plants are listed as low light, medium light, and high light. But, what does this mean?

  • Low light plants are those that can get by with just 2 to 4 hours of indirect light a day.
  • Medium light plants prefer at least 4 to 6 hours of indirect sun a day.
  • High light plants need 6 to 8 hours of direct sunlight per day.

Of course, if your home doesn’t provide the right amount of light for your favorite plant, you can augment natural light with artificial. Fluorescent “grow light” bulbs work well in a pinch, but they need to be hung 18 to 24 inches above your plants.

What is indirect light?

Indirect light is a light source that is a spot that is not in a direct stream of sunlight. Draw a direct line between the plant and the sun. If this line does not have to go through anything (like trees or curtains), then that is direct sunlight.

Here are some basic tips on lighting that you can depend on for healthy plant growth.

  • Low Light Doesn’t Mean a Totally Dark Room
    • All plants require at least a few hours of light. Some are happy to live on artificial light alone, but they must receive a steady supply, not just when the lights are flipped on as you enter a room.
  • Bright, Indirect Light Is the Best Choice for Most Plants.
  • Most Houseplants Do Not Like Direct Sunlight.
    • Of course, there are always exceptions such as Aloe Vera, Succulents, and Cacti to name a few.
  • If Your Plants Start to Grow too Leggy or Spindly it’s a Sign they Aren’t Getting Enough Light.