I’ve grown Alpines from seed here in Puerto Rico. No fuss. I’m starting them again and have a few seedlings growing. Once they get past the seedling stage, they are very tough plants, handling heat waves and full-day burning sun like champs. They seem to bear fine under care, but production grows sparse when overly neglected (my neglect grew to the point of eventually killing my prior plants, but they survived under that neglect for several consecutive years). Despite their name and origins, they are very much not fussy about high temps and air humidity variations. Soil & watering might be the biggest concerns, but they’re also the most easily-handled concerns.