昨春

1. Origins, structure, and basic meaning

• Structure: 昨春, read さくしゅん, is a compact expression for the spring of the previous year.
• Basic usage: It is used to specify when a sapling was planted or a shop opened.
  • 昨春植えた桜の苗に、初めて花が咲いた。

2. Common pitfalls and similar expressions

• Register compared with 去年の春
  • 昨春 is useful as a concise form in writing or reports, while 去年の春 is also common in everyday conversation.