How to say "forget-me-not" in Japanese

• 忘れな草わすれなぐさ
  nounThe Japanese name of the plant, a direct translation of 'forget-me-not'; it covers the flower generally, with particular reference to the water forget-me-not (Myosotis scorpioides). Use it when you mean the plant itself.
• 忘るな草わするなぐさ
  nounA less common variant form of 忘れな草, spelled with the classical imperative 忘るな ('forget not'); it denotes the same plant, and for ordinary purposes 忘れな草 is the form to use.
• フォーゲットミーノット
  nounA katakana transcription of the English name. It denotes the same flower, but this less common, purely phonetic rendering is seldom the word you want unless the English name itself is the point.

For the flower itself use 「忘れな草」, which especially denotes the water forget-me-not (Myosotis scorpioides); 「忘るな草」 is a variant form of the same name, and 「フォーゲットミーノット」 is simply the English name in katakana.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 忘れな草わすれなぐさforget-me-not (esp. the water forget-me-not, Myosotis scorpioides)
• 忘るな草わするなぐさforget-me-not
• フォーゲットミーノットforget-me-not