Pest identification
What's eating my signet marigold 'lemon gem'?
Spider mites
Signs: Pale, stippled leaves with fine webbing on undersides during hot, dry periods.
Control: Mist foliage regularly during drought. Spray insecticidal soap or neem oil on leaf undersides every 5–7 days if colonies appear.
Slugs and snails
Signs: Ragged notches on lower leaves and seedling stems at soil level; slime trails visible in the morning.
Control: Apply iron phosphate slug pellets around plants. Hand-pick at night; use gritty mulch or copper barrier tape around containers.
Aphids
Signs: Small colonies on young shoot tips; sticky residue and mild leaf distortion.
Control: Remove by hand or with a strong water spray. Beneficial insects (ladybirds, lacewings) usually keep colonies in check without chemical intervention.
Keep signet marigold 'lemon gem' pest-free
Healthy plants resist pests best. Get the basics right:
- What eats signet marigold — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common signet marigold 'lemon gem' problems & fixes
- Signet Marigold 'Lemon Gem' watering schedule
- Signet Marigold 'Lemon Gem' light requirements
- Full signet marigold 'lemon gem' care guide
Signet Marigold 'Lemon Gem' pests — FAQ
What is eating my signet marigold 'lemon gem'?
Signet Marigold 'Lemon Gem' is among the most pest-resistant marigolds — its fine, intensely aromatic foliage deters many insects. Spider mites can flare in drought stress, and slugs may nip seedlings. Aphids rarely build large colonies. Overall one of the easier annuals to grow without pest intervention.
How do I get rid of spider mites on signet marigold 'lemon gem'?
Pale, stippled leaves with fine webbing on undersides during hot, dry periods. Mist foliage regularly during drought. Spray insecticidal soap or neem oil on leaf undersides every 5–7 days if colonies appear.
How do I get rid of slugs and snails on signet marigold 'lemon gem'?
Ragged notches on lower leaves and seedling stems at soil level; slime trails visible in the morning. Apply iron phosphate slug pellets around plants. Hand-pick at night; use gritty mulch or copper barrier tape around containers.
How do I get rid of aphids on signet marigold 'lemon gem'?
Small colonies on young shoot tips; sticky residue and mild leaf distortion. Remove by hand or with a strong water spray. Beneficial insects (ladybirds, lacewings) usually keep colonies in check without chemical intervention.