Hoshino was born in Kōjimachi, Tokyo, as the daughter of the poet and novelist Takahama Kyoshi.

After her marriage to the grandson of Hoshino Tenchi, she was encouraged by her father to start writing haiku and soon showed an amazing talent.

In 1930 Hoshino founded a haiku magazine exclusively for women called Tamamo.

Two years later, she joined the Hototogisu literary circle and shared the position of leading female haiku poet with Nakamura Teijo.

In 1937 Hoshino published her first haiku anthology, which was followed by other volumes including Kamakura, Sasame and Jitsui.