Lighting for mother plants

[DumbFalang]

How critical is the type, location and timing of lighting for reliably keeping a mother plant in a vegetative state?

[marcusb]

Type, doesn't matter too much LED HID or possibly fluorescent. HID I'd say you need 250 watts. 

 

Location, above the plant.  Distance depends on style and heat of lamp. Close enough that plant doesn't stretch, far enough it doesn't burn.  12 inches for HID
 

timing,  18 hrs on 6 off.   

 

of the 3 timing is most critical, IMHO