Pest identification
What's eating my wild nemesia?
Aphids (various species)
Signs: Colonies on new shoot tips and flower buds; honeydew, sooty mould, and distorted young growth
Control: Water blast; insecticidal soap or neem oil spray; pinch infested tips; encourage beneficial insects
Whitefly (Trialeurodes vaporariorum)
Signs: Clouds of white insects on leaf undersides; sticky honeydew; yellowing; sooty mould on foliage
Control: Yellow sticky traps; insecticidal soap or pyrethrin spray; Encarsia formosa biological control in protected settings
Two-spotted spider mite (Tetranychus urticae)
Signs: Fine pale stippling and bronzing of leaves; webbing underneath; damage escalates in hot, dry periods
Control: Raise humidity with misting; apply neem oil or miticide; predatory mite releases in severe cases
Slugs and snails
Signs: Notched or ragged holes in lower leaves; stems of young plants cut at soil level; slime trails
Control: Iron phosphate pellets; grit or sharp bark mulch; hand-pick after dusk; clear debris around plant base
Keep wild nemesia pest-free
Healthy plants resist pests best. Get the basics right:
Wild nemesia pests — FAQ
What is eating my wild nemesia?
Nemesia fruticans, the perennial shrubby nemesia, shares similar pest vulnerability to its annual relatives. Aphids cluster on soft tips, whitefly appear on container plants, and spider mites strike in heat. Slugs and snails damage low foliage. Aphids are the most consistent pest across UK and US garden conditions.
How do I get rid of aphids (various species) on wild nemesia?
Colonies on new shoot tips and flower buds; honeydew, sooty mould, and distorted young growth Water blast; insecticidal soap or neem oil spray; pinch infested tips; encourage beneficial insects
How do I get rid of whitefly (trialeurodes vaporariorum) on wild nemesia?
Clouds of white insects on leaf undersides; sticky honeydew; yellowing; sooty mould on foliage Yellow sticky traps; insecticidal soap or pyrethrin spray; Encarsia formosa biological control in protected settings
How do I get rid of two-spotted spider mite (tetranychus urticae) on wild nemesia?
Fine pale stippling and bronzing of leaves; webbing underneath; damage escalates in hot, dry periods Raise humidity with misting; apply neem oil or miticide; predatory mite releases in severe cases
How do I get rid of slugs and snails on wild nemesia?
Notched or ragged holes in lower leaves; stems of young plants cut at soil level; slime trails Iron phosphate pellets; grit or sharp bark mulch; hand-pick after dusk; clear debris around plant base