If I understand correctly, the temp. in Taiwan should be still warm and comfortable.If so, I would apply some fertilizer with rich phosphate content until when the temp. drops down to 15C.

• 如果我所了解的无误；台湾的天气应该是仍然温暖舒适；既然如此；我会施些含丰富磷酸盐成分的肥料；直到气温降到摄氏15度以下.