tough flowers for grave site?
I want to plant some perennial flowers and/or bulbs on my dad's grave site in west central Indiana. It'll be awhile since we don't have the headstone set yet, but I want to plan ahead a little. Whatever I plant won't get any special care -- just put it in and let it do it's thing -- I'm on the west coast and won't be able to nurture things along. I'm thinking easy bulbs (like daffs). Any other thoughts? If I could plant something he loved, it would be corn :) but otherwise it's just whatever I like that will do ok.
Thanks for your help.