How to plug in a Philips Low Pressure Sodium Bulb using a Ballast
This is a bunch of random junk.

Stop buying things this way.  You can't just throw random electronic bits together and have them work.  But don't feel bad, this happens a lot. We get a steady stream of people buying random dimmers and smart switches and wanting to configure them 3-way to control some cheap LEDs they got off the bottom shelf of Walmart, or other equally random things. 

School up

You just need to get some magazines, good "how I built it" sites on the Internet, or whatever, and read up on how others are doing what you are trying to do.   By the way, low pressure sodium is the best for some applications. 

Buy used

From time to time, low-pressure sodium fixtures come up on the used market: Craigslist, eBay, etc.  See what you can find. Good chance though if you are trying to do home herb farming, the best lamps may be in high demand, especially now that many states have made one particular herb legal.