QuestionsHow to growTrees and ShrubsPlacing treesSpacing Acers 0 Vote Up Vote Down bunnygrumpy asked 15 years ago I’ve just bought 2 Acers 1 Sango Kaku and the other Sumi Nagashi. Just wondered how far apart I should plant them? The Sango Kaku says it is fast growing but there is no other guidance 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 6 years ago Both of these are relativley strong-growing varieties and would need to be planted at least 5 metres apart to give space for their eventual size.