Yes, it works for me. I don't even have a grow light, just an old shop light with 2- 48" inch fluorescent bulbs. I do have it suspended from the ceiling so that I can raise and lower it to fit the size plants that I am working with. I waited until time to bring Mandevilla inside and stuck my cuttings in Oct... it worked so well I had to keep cutting them back all winter. I have done several other plants such as Oleander in late fall to be kept over inside the house. You will need to keep the humidity up by enclosing in plastic or use a humidity dome such as 2 liter soda bottles for taller cuttings. I have stuck smaller cuttings in a cell type flat, placed it in a large plastic bag like huge packs of paper towel come in...spray the inside to raise the humidity..tie if off with string and tie the string up to the light fixture to keep it off the plants..works really well. You can make a slit in the plastic to prop open as you begin to lower the humidity on them or want to reach in to check on them. It can be pinned or paper clipped shut if need be.

A basement is good...higher humidity, but you would probably need some bottom heat to encourage faster rooting. I would think that the basement would be a good place to move them to once they are rooted. Higher heat makes for good rooting, but not so good for long term holding. You would need a light set up down there, also.

Even if you have a greenhouse it is questionable whether it would be economically sound to heat a green house in order to avoid paying the nursery man. I have wondered if having one attached to the house with an open window for heat gain to the house in the day time and the house to heat the greenhouse at night might balance out the cost of heating one. With insulation blankets on the glazing at night, it might not be too bad.

By the way, I have a 12x12 greenhouse that is used for growing cold weather veggies in winter...no heated air, but do have hot water lines under the growing beds to keep the soil temp up around 60* when it gets really cold. I can use that for dormant cuttings...just sink the pots down in the beds to get the benefit of bottom heat. The cold air prevents the tops from wanting to grow while they make roots. If you will be doing any woody ornamentals, they can go out in a bed in mid December for zone 7.

Hope this gives you some ideas to consider.

Wow!!! Thanks for the super input!! I can't tell you how much I appreciate the information and the time it took to share it. I can't wait!!