How many flowers fail in wood,
fail in wood
Not 'die' or 'wither'—'fail' suggests a test not passed, a purpose unfulfilled. Dickinson treats unseen beauty as failure.
privilege to know
Beauty requires consciousness of being seen. The flower can't enjoy its own beauty—it needs a witness.
scarlet freight
'Freight' makes seeds into cargo, beauty into commerce. The pod doesn't know what value it carries.
to other eyes
Not 'to eyes' but 'to OTHER eyes'—beauty exists only in relation, in the gap between object and observer.