LOL Datdog, oddly enough this was growing right opposite Spinners Garden which is a beautiful open garden (with nursery attached that I daren't visit too often, far too tempting). They hold the National Collection of Trilliums so if you do come to Hampshire in the Spring there will be plenty of things to see, quite apart from the fact it's in the New Forest which has a number of rare flora and fauna species and is a unique habitat in GB.
Let me know where ever it is you come to visit and I'll see what I can find in regards to open gardens. We have several charity schemes here where people open their own gardens for viewing at various times of the year.