Caveat: I have hopefully finished having children, so this is pure daydreamery for me.
In my riper age I have really started to like plant/flower names, possibly more for middle names as I don't think I am posh enough to pull some of them off (just my own opinion!)
But some of my favourites are:
Oleander
Hebe
Aster
Fleur
Primrose
Daisy
Has anyone got any flower/plant names?