flowers bloom a year

this is the first time I see this flower.the time I asked the same who got. what is the name of this flower he answered this name blooming flowers aahun.kalau story that have flowers blooms a year is a year bloom a year layu.bunga it is beautiful and white color is very good at planting in front of rumah.bunga this price is quite cheap.but when I asked where he came from he also do not know.