What's Eating My Sunflowers?
A sunflower is a seed vault on a stick, and the whole neighborhood knows the combination. Damage shifts as the plant grows — seedling, stalk, then the head itself.
The usual suspects
Birds
The signs: Seeds excavated from the ripening face, shells littered below, damage spreading daily from the head's edge.
What it looks like: Finches, chickadees, and jays working openly — the classic endgame thief.
What to do: If the seeds are your harvest, tie a paper bag or cheesecloth over maturing heads; if not, enjoy the show — it's free birdseed on the stem.
Squirrels and chipmunks
The signs: Whole heads bent, gnawed, or lopped off; stalks climbed and toppled.
What it looks like: Wholesale head theft beyond bird ambition, often the entire head carried off.
What to do: Harvest heads at maturity (back of head yellow-brown) and finish drying indoors; baffle isolated stalks like a feeder pole.
Cutworms
The signs: Seedlings toppled at soil line in late spring.
What it looks like: C-curled soil caterpillars beside the fallen.
What to do: Collars on transplants and resowing — sunflowers catch up fast.
Sunflower moth larvae
The signs: Webbing and frass tangled across the face of the bloom, seeds hollowed beneath.
What it looks like: Small striped caterpillars in the disk as it flowers.
What to do: Plant early or late to dodge peak moth flight; pull and destroy webbed heads before larvae finish.
Aphids and grasshoppers
The signs: Sticky curled upper leaves (aphids) or ragged chunks torn from leaf edges in late summer (grasshoppers).
What it looks like: Colonies under leaves; hoppers in plain sight.
What to do: Water-blast aphids; grasshopper damage rarely dents a healthy sunflower.
Deer
The signs: Young plants bitten to stubs; buds nipped just as they form.
What it looks like: Ragged browse at deer height, hoofprints between rows.
What to do: Repellents while plants are short — once stalks pass six feet, the buds outgrow reach.
When it's not a pest at all
A mature head bowing to face the ground isn't wilting — heavy seed heads droop by design, and it protects the seeds from rain. Lower leaves yellowing as the head ripens is the plant closing the books on schedule.
Or just point your phone at it
Snap a photo of the leaf, the bug, or the droppings, and Harold — the advisor built into Homestead Paradise — names what he sees, tells you friend or foe, and what he'd do next. Honest when he's unsure, and careful where it counts.
Put Harold's Eyes on it — free 14-day trial