I planted Romaine in the garden also in a 2 gallon pot. Romaine in the garden is doing good even with this crazy weather. Temperature has been up and down in the 50s one week then 90s the next week it was 56 here yesterday. I am keeping the Romaine in the flower pot in the shade I hope that will keep it from going to seed for a while longer. What works for someone else may not work for me or you we all have different weather just try it and see how it does for you. Soon it will be 100 degrees here for 2 whole months I am hoping shade helps my lettuce. Something I learned long ago if your plants bolt, flower and try to make seed cut the tops off, they will grow new tops so keep cutting them off. If you can keep your plants alive until cool weather they make nice plants again. Hot weather makes some plants bitter or spicy hot but when weather gets cool in the fall the plants all get sweet and tender again. Carrots will get hard as a pine board in 100 degree weather but when temperatures get in the 40s they get tender and sweet. LOL. My kale, chard, romaine, bib, Russian red, boc choy, are all still tender and sweet, so far so good, it was in the 90s last week, 56 was the high yesterday. NY should be a lot more weather friendly for cool weather crops than TN you should have much better luck than me.
I don't do raised bed, these are just wooden boxes to keep our 8 baby kittens. I had wire over the top but now the kittens all have new homes so the wire and boxes are no longer needed.
My, kale, red chard, rainbow chard, green chard, boc choy, Russian red, romaine, are all so good I have been eating a giant salad for dinner every day, sometimes lunch too. I like Thousand Island & Zesty Italian mixed 50/50.
It is all very good on sandwiches and other things too. I had a Kale Smoothy for breakfast it was very good.