In looking at just one book last night on indoor lighting conditions, and getting very frustrated, I resolved to do a search online and came up with the below guidelines. I got frustrated because I was wondering what light a plant
of mine does really well in and in the same book it was listed in the "low light" list and then when I looked under the plant
itself it said bright light! So, give it to me straight...is the following info accurate?
While light intensity is measured in foot-candles and can be evaluated by using a light meter or photographic exposure meter, you can also follow these general guidelines.
Low Light- (75 foot candles)
North window: a few feet away; East/West window: 3-10 feet away; South window:15-20 feet away
Medium (average) Light (150 foot candles)
North window: directly in front; East/west window: a few feet away; South window: 3-10 feet away
High or Bright Light (300 foot candles)
East/west window: directly in front; South window: up to 5 feet away
Direct (1500 foot candles)
South window: directly in front
Keep in mind that light conditions change throughout the seasons. Several factors can influence your light intensity and duration. For example, the sun is higher on the horizon in the winter (increasing the brightness indoors) and lower on the horizon in the summer (decreasing the brightness indoors); surrounding trees
and shrubs may block sunlight with their leaves in summer, but allow for more light during the winter after their leaves have fallen off.