The main reasons why hibiscus flowers don't bloom are as follows: First, there is a lack of fertilizer, and hibiscus flowers like fertilizer, especially in flowering and bud stage, which requires a lot of phosphorus and potassium fertilizer. Only applying nitrogen fertilizer will not bloom, but also make the branches grow white and disperse nutrition, making it difficult to form flower buds, so fertilization must be balanced. Second, lack of light, hibiscus flowers are sunny, lack of light can not form flower buds, but also can not bloom, so the conservation environment must be sunny, even in hot summer, it can not shade, otherwise it will not bloom, and yellow leaves will fall. Third, the temperature is uncomfortable. Hibiscus flowers need high temperature conditions. The temperature is between 20-35℃, and the growth is slow below 20℃. It is easy to shed leaves below 10℃, and it will freeze below 5℃. Fourth, improper watering, hibiscus flowers like water, are not resistant to waterlogging and drought, otherwise yellow leaves will easily fall, leading to poor plant growth and difficulty in budding and flowering. /question/3 16 16520 . html？ si = 1/question/32529607 . html？ si=2