In the Netherlands, in the town of Zundert, there is a nursery called Special Plant, which works since 2008 and, among other things, breeds tea plants. Modern greenhouse farming allows nursery specialists not only to grow and sell seedlings of Camellia sinensis (in flowerpots and mini greenhouse jars), but also to harvest from cultivated tea bushes (a variety of their own Dutch selection, by the way). A small harvest, but quite sufficient to produce real Dutch tea. Here is the tea section on the nursery’s website, and a FB page of their tea project.
Beautiful. Well, and there’s a new goal in life. We have not tried the Dutch hothouse tea yet.