belonging to or characteristic of or occurring in summer

夏に属する、または夏の特徴や夏に起こるもの

of or characteristic of or occurring in spring

春の、春に特有の、または春に起こる

characteristic of or occurring in winter

冬の特徴がある、または冬に起こる

of plants that bloom during the autumn

秋に咲く植物

of plants that ripen in the fall

秋に成熟する植物のこと

the season when the leaves fall from the trees

木の葉が落ちる季節