I bring herbs indoors in my home in the fall before the first hard frost. I keep them in a bay window. I put small gravel peices under the pots in a resevoir tray and keep the herbs moist and in the sun
We live in California...near Sacramento. The summers here are perfect for growing Thai basil in a pot outside.
Unfortunately the winters are too cold
I suppose if you brought the plant indoors and kept it near a sunny window in a warm house, it would grow all season.
We just grow it when the weather allows and use sweet basil from the supermarket instead. Not the same taste but it works for our family
I grow ton of Thai basil, Holy Basil, Thai Hot peppers, Kale, and more on my land. Keep them indoor should be fine with sun light. They are easy to grow in hot summer. I am in So California and am still harvesting them fine also expect to slow down in the next few months as some of them will drop leaf but will survive as perennial. Great for Vietnamese Pho Noodles, soup, Thai Curry, and marinate them in meat for stir-fry.
Thai basil and sweet Basil are similar but different animals. Thai basil has purple/deep red stems and stands up to being cooked better than sweet or traditional basil which are better suited to be added at the very end or after cooking.