Place your tree in this hole during early spring or fall, covering the root with soil, tamping down gently, and watering thoroughly. If you've chosen a full-size plum tree, leave at least 15 feet ...

The sprawling, nine-hectare grove contains around 4,000 plum trees of 28 varieties, which are nearly at full bloom. The early-blooming Ryokugakushidare trees are particularly striking.