I have a thing for purple alliums. What can beat round balls of purple star like flowers?
Being related to onions you might expect these flowers to have an unfortunate aroma, but to me they kind of smell like grapes. Although their leaves are already yellow, these round balls will look neat even after the purple fades and the seed capsules form.
My deep purple meadow sage plants are looking spectacular right now! These unusually shaped flowers don't seem to have a scent. They really don't need it since the foliage has the plant equivalent of BO. The pollinator that is attracted to this plant likes a strong scent!