With his scientific background, Len was always curious about the natural world and was interested in extending his knowledge and understanding of it. He enjoyed constant exploration, an attitude that opened the paths of creative production for him. He usually started with a distinct idea for what he wanted to achieve in a new project and after 62 years of potting experience was extremely adept at translating this idea into the finished product. Of course the results did not always match the artistic vision that inspired them, but after a lifetime dedicated to potting; they were generally pleasing, as he modestly acknowledged: "I'm at my peak. I used to say, I can't often hit the nail on the head; now I can say I hit the nail on the head more often."