Yes, it would work for one or maybe two or three plants. It's a 70 watt HPS bulb. You can veg and flower with it if you want. Although it's usually good to do the first few weeks with 6500K fluorescent lights, but just like I mentioned you don't have to start with fluorescents. I'm not sure how you'd wire it though or if it has a ballast built into it. I've seen 150W HPS lights on ebay for around $75 which come with everything you need. Plus, you can simply plug them into a socket which means you don't have to mess with trying to wire it.