Pruning an etrog tree that is indoors
My etrog tree is rather spindly and is reaching my ceiling. I think it might benefit from pruning but I don't know where to make the cuts.
You can make the cuts about a foot from the base. This will not solve the problem, though. This is due to a lack of light. You will want to move this to a sunnier spot, or grab a horticultural grade lighting fixture of 200 watts or more. This will keep the growth short, especially if the bulb that you choose is a metal halide in blue spectrum, or LED of the same spectrum.