I have no idea how many daylilies I actually have. It certainly isn't in the 100s. I've added a lot more in the past two years, but I also went from 1/5 of an acre to 12 1/2 acres. More room means more daylilies! I'm sure I'll never had them in the thousands though. I want to have a life, and other plants too, so I won't fill up all my land with them. But, I'm sure I need more!
I moved from a colder climate, but had great soil there. My plants are loving this climate, and my soil wasn't the greatest, but I'm working on making it better. The climate is what made the big difference for me. They have multiplied way too fast, and I never expected that to happen!