Pest identification
What's eating my baby sweetcorn?
Corn earworm (Helicoverpa zea) / European corn borer
Signs: Larvae enter via silks and feed on immature kernels; harvesting baby corn early (before silks dry) reduces window for infestation.
Control: Apply Bt spray to silks; harvest cobs very early (1–3 days after silk emergence) which is the key commercial practice for baby corn.
Birds
Signs: Peck up seeds and seedlings; rip husks from forming cobs.
Control: Net beds immediately after sowing; use bird-scaring devices during germination and cob set.
Slugs & snails
Signs: Ragged damage on young seedling leaves and stems, especially in wet conditions.
Control: Apply ferric phosphate pellets at sowing; use nematodes (Phasmarhabditis hermaphrodita) in moist soil; avoid over-watering seedbeds.
Corn leaf aphid
Signs: Colonies on tassels and upper leaves; honeydew and sooty mould; can impair pollination if left unchecked.
Control: Encourage hoverflies and ladybirds; insecticidal soap spray if numbers are high before tasselling.
Keep baby sweetcorn pest-free
Healthy plants resist pests best. Get the basics right:
Baby Sweetcorn pests — FAQ
What is eating my baby sweetcorn?
Baby sweetcorn shares the same pest threats as full-sized sweetcorn — corn earworm and birds top the list — but its shorter growing window and dense plantings reduce total exposure. Wildlife raiders (badgers, squirrels) are just as attracted to immature cobs. Net the block and monitor silks as soon as they emerge.
How do I get rid of corn earworm (helicoverpa zea) / european corn borer on baby sweetcorn?
Larvae enter via silks and feed on immature kernels; harvesting baby corn early (before silks dry) reduces window for infestation. Apply Bt spray to silks; harvest cobs very early (1–3 days after silk emergence) which is the key commercial practice for baby corn.
How do I get rid of birds on baby sweetcorn?
Peck up seeds and seedlings; rip husks from forming cobs. Net beds immediately after sowing; use bird-scaring devices during germination and cob set.
How do I get rid of slugs & snails on baby sweetcorn?
Ragged damage on young seedling leaves and stems, especially in wet conditions. Apply ferric phosphate pellets at sowing; use nematodes (Phasmarhabditis hermaphrodita) in moist soil; avoid over-watering seedbeds.
How do I get rid of corn leaf aphid on baby sweetcorn?
Colonies on tassels and upper leaves; honeydew and sooty mould; can impair pollination if left unchecked. Encourage hoverflies and ladybirds; insecticidal soap spray if numbers are high before tasselling.