Pest identification
What's eating my celeriac 'monarch'?
Celery leaf miner (Euleia heraclei)
Signs: Pale blotch mines weaken foliage progressively over the long growing season, reducing root bulking
Control: Insect-proof mesh over the entire bed; pick off mined leaves as soon as spotted; remove and compost (hot heap) or bin all debris
Slugs and snails
Signs: Irregular cavities in the root exterior make cleaning difficult and allow rot to enter
Control: Iron phosphate pellets; gritty surface mulch; hand-pick at dusk particularly after rain
Aphids
Signs: Soft new growth distorted; honeydew promotes sooty mould on foliage
Control: Encourage natural predators; insecticidal soap spray; blast off with water
Keep celeriac 'monarch' pest-free
Healthy plants resist pests best. Get the basics right:
Celeriac 'Monarch' pests — FAQ
What is eating my celeriac 'monarch'?
Celeriac 'Monarch' is vulnerable to celery leaf miner above ground and slugs at root level. Carrot fly and aphids are secondary concerns. Because celeriac has a long growing season, sustained leaf miner pressure accumulates and significantly reduces bulb size if left uncontrolled.
How do I get rid of celery leaf miner (euleia heraclei) on celeriac 'monarch'?
Pale blotch mines weaken foliage progressively over the long growing season, reducing root bulking Insect-proof mesh over the entire bed; pick off mined leaves as soon as spotted; remove and compost (hot heap) or bin all debris
How do I get rid of slugs and snails on celeriac 'monarch'?
Irregular cavities in the root exterior make cleaning difficult and allow rot to enter Iron phosphate pellets; gritty surface mulch; hand-pick at dusk particularly after rain
How do I get rid of aphids on celeriac 'monarch'?
Soft new growth distorted; honeydew promotes sooty mould on foliage Encourage natural predators; insecticidal soap spray; blast off with water