Wish mine had done as well. Bought it last year looked at it today and I think it dead. If memory serves me right they are clump forming so maybe it just doing what it should and forming a clump.
philippa smith2 said:
It is not unusual.Looking at the 2 trunks ( Left and top of pic ), they have been cut or broken and therefore you will find suckers coming from the base.You can try removing the suckers but they will grow back IME.