When planning a funeral service, what flowers need to be bought by the family?

I understand a casket spray needs to be arranged, but what about flowers for the mother, the brothers, etc.?

When planning a funeral service, what flowers need to be bought by the family?
For my grandma's funeral in Dec. we bought the casket arrangement only. I've never heard of giving flowers to the surviving relatives.
Reply:You don't necessarily have to go to those lengths unless you'd like to. To me, funerals are like weddings; there are few "rules."
Reply:carnation.or a red rose.