A gardener shakes dried seed pods over the ground in autumn, and the poem follows what happens next. The seeds look like nothing much: tiny black specks that could pass for mineral chips. Yet the speaker sees them as postcards written now and saved for winter, each one holding a "whole code" for next year's red blooms, hummingbirds, and tall, bubble-gum pink flowers.
The instruction is simple: leave them alone. Birds may eat some, others may never sprout, and the speaker accepts that. The mood is calm, patient, and quietly hopeful. Winter passes, and the seeds are mostly forgotten until a songbird brings thoughts of summer clothes and bare feet on grass.
The title suggests the poem is also advice. Plant your hopes, then don't fuss over them. Trusting time to do its work, the speaker implies, is a kindness you can offer yourself too.