桂花几年不开花,主要原因有二:一、开花年龄较晚。桂花寿命长,一般可活几十年至几百年,有的甚至活几千年,因而开花晚。播种的实生苗要10年左右开花,扦插苗要4年多;嫁接的金桂、银桂,在次年仅有1/5的花;嫁接的四季桂虽当年开花,但花很少,总之达不到开花年龄,是不会正常开花的。 Osmanthus flowers for several years, there are two main reasons: First, the flowering age later. Osmanthus long life, generally can live a few decades to several hundred years, and some even live thousands of years, which flowering late. Seedlings planted to bloom about 10 years, cutting seedlings to more than 4 years; grafted gold, silver, in the following year only 1/5 of the flowers; grafted four seasons though flowering that year, but flowers rarely, in short Not reach the flowering age, is not normal flowering.