Craspedia globosa I been looking around and I dont believe they are edible, the ones that are edible and look great are
Globe amaranth they have same style flower but unfortunatelly have a diferent color but your little one may still like they as they do look like cotton balls or lollipops and if he decides to taste them they are safe and healty option altought to be honest i think the texture of either flower place in themouth would be tickling and odd,but the red flowers can be use in many food recipies .
Globe Amarant information
have a lovely day.
Selene