I'm a bit of both. I try as much as I can to be a planner. With the new garden design coming up, I'm trying to see what I can plant where. But as it's still undecided as to how big the coming hardscapes are going to be, I've no idea of the available planting space, so I sort of 'sketch' what goes where. The amount/number of specimens will be trial and error since it'll take some years for them to mature and fill the space nicely. So in that view I'm a plunker; I'll propably cram too many specimens into one place.