In Japan, NHK produced and broadcast an anime adaptation of the novel in 1991–1992 titled "Anime Himitsu no Hanazono" (アニメ ひみつの花園). Miina Tominaga contributed the voice of Mary, while Mayumi Tanaka voiced Colin. The 39-episode TV series was directed by Tameo Kohanawa and written by Kaoru Umeno. Based on the title, this anime is sometimes mistakenly assumed to be related to the popular dorama series "Himitsu no Hanazono". Unavailable in the English language, it has been dubbed into several other languages including Spanish, Italian, Polish and Tagalog.