Recently I was lucky enough to go to the other side of the pond for almost 2 weeks to work on a film project. My plants almost jumped out of their pots when I had to tell them I would not be home to take care of them. Luckily I found this excellent piece of information. Number 5 worked like a charm. My advice is to experiment ahead with as many cords as you can to get the one that works the best.
For my outside plants, I bought an automatic water timer so that they stayed hydrated under the hot sun. Yes it’s still winter but in this place it already feels like summer …27 Celsius! ( I miss London’s weather)