you can bury root barrier, to keep the tree

search for "root barrier for trees".

所有跟帖： 

• 這個好！ -newleaf2020- ♀ (0 bytes) () 07/18/2023 postreply 12:18:17

• 你栽樹的時候可以加barrier，現在樹都長大了你怎麽加barrier？ -檸檬椰子汁- ♂ (0 bytes) () 07/18/2023 postreply 13:57:45

• cut root, lay a straight line long barrier -sandagape- ♂ (0 bytes) () 07/18/2023 postreply 21:30:34