There was some interest earlier this year in my experience growing D. Arcturi. I live in a warm city with 30*c summer days but successfully grow both mature plants and seedlings of alpine sundew, including Arcturi.
For my mature plants, this is their third season. The seedlings are popping up everywhere, mostly due to the bog flooding multiple times over winter (even though it wasn't intentional, it mimics their natural environment anyway!).
In New Zealand the sun is extremely damaging to organic tissue, we have no ozone thanks to a certain Northern Hemisphere... and in Auckland it's especially bad. The bog is constantly fed by an insulated, supercooled reticulation system with probably about 150 litres of water throughout the system, with a backup 15 litres. The Arcturi share space with alpine versions of D. Binata, D. Spatulata, D. Pygmaea, Pinguicula and Utricularia, as well as Dionaea, D. Venusta and multiple species of moss. It's a busy place!
Everything's coming back for spring so I thought I'd just share a couple of quick pictures with both mature plants and seedlings, as well as some blurred red splotches of Binata and Spatulata. It can be done!