You would have to re wire or replace the ballast to make your new light 110 -
Trying to figure out how to convert the voltage at the wall may be a doable thing but an electrical fire is the last thing anyone needs!! And- I will also say I've never heard of an adapter for that...but....I've also never looked for one to be honest.
Do you have a buddy that can help you pull a new leg (new wire to the also new 220 receptacle?) to your flower room?
It isn't rocket science but def best left to the pros if you don't know what you're doing
220 has two wires that are hot, a ground, and one neutral. 110 has just one of each.
Good luck!