Pest identification
What's eating my ruellia brittoniana?
Aphids
Signs: Clusters of tiny green or black insects on stem tips and buds; curled leaves, sticky residue, sooty mould
Control: Spray with a strong water jet; apply insecticidal soap or neem oil; encourage lacewings and ladybugs
Caterpillars
Signs: Ragged holes in leaves and petals; frass (droppings) visible on or below foliage
Control: Hand-pick caterpillars; apply Bacillus thuringiensis (Bt) spray to foliage as a targeted biological control
Slugs and snails
Signs: Irregular slime-trailed holes in lower leaves and young stems, worst after rain or irrigation
Control: Use iron phosphate slug pellets around the base; set beer traps; remove debris where slugs shelter
Spider mites
Signs: Fine stippling and pale bronzing on leaves during hot, dry weather; thin webbing on undersides
Control: Water plants adequately; spray with neem oil or insecticidal soap; increase air circulation
Keep ruellia brittoniana pest-free
Healthy plants resist pests best. Get the basics right:
Ruellia Brittoniana pests — FAQ
What is eating my ruellia brittoniana?
Mexican Petunia (Ruellia simplex) grown in garden beds is attacked by aphids, caterpillars, and spider mites in hot dry spells. Slugs and snails can damage low foliage and seedlings. It is generally vigorous and pest-resistant, but dense plantings can harbour populations that spread to nearby plants.
How do I get rid of aphids on ruellia brittoniana?
Clusters of tiny green or black insects on stem tips and buds; curled leaves, sticky residue, sooty mould Spray with a strong water jet; apply insecticidal soap or neem oil; encourage lacewings and ladybugs
How do I get rid of caterpillars on ruellia brittoniana?
Ragged holes in leaves and petals; frass (droppings) visible on or below foliage Hand-pick caterpillars; apply Bacillus thuringiensis (Bt) spray to foliage as a targeted biological control
How do I get rid of slugs and snails on ruellia brittoniana?
Irregular slime-trailed holes in lower leaves and young stems, worst after rain or irrigation Use iron phosphate slug pellets around the base; set beer traps; remove debris where slugs shelter
How do I get rid of spider mites on ruellia brittoniana?
Fine stippling and pale bronzing on leaves during hot, dry weather; thin webbing on undersides Water plants adequately; spray with neem oil or insecticidal soap; increase air circulation