Full Member
Posts: 20
Joined: Sun Jan 08, 2012 6:52 pm
Location: Reading, Pennsylvania

how close to lights?

How close, on average, is it recommended to position ones plants under fluorescent lights?

I originally assumed as close as possible without touching would be optimal since fluorescent don't give off much heat.. however, I have been hearing about 5-6" is the best range measuring up from the top of the plant to the light source.

Can anyone shed some.. wait for it... light on this for me : P (sorry!)

Super Green Thumb
Posts: 2437
Joined: Mon Nov 15, 2010 10:31 pm
Location: Latrobe Pa.

I think that is about right closer s better to a point!. I keep mine about 9 inches so the light hits the side white reflective foam panels. The reflected light hits the under sides of the leavers and increases the intensity of the direct light by adding to it!! Keeping it too close causes a shadow on the under leaf in my opinion! Placing perlite on the surface of the soil will also add to light reflection to the under leaf!
Last edited by Bobberman on Thu Jan 12, 2012 9:43 am, edited 1 time in total.

Greener Thumb
Posts: 749
Joined: Sat Feb 06, 2010 7:28 am
Location: Cedarville (SE of Utica) NY, USA

Good question - good answer.

Return to “Indoor Bonsai Forum”