Pest identification
What's eating my lobelia erinus 'techno heat blue'?
Slugs and snails
Signs: New transplants and soft basal stems eaten at night; plants may be completely severed at soil level if slug pressure is high.
Control: Place iron phosphate pellets at planting; use copper rings or tape on container rims; patrol at night and remove slugs by hand.
Aphids
Signs: Colonies on tender shoot tips in warm conditions; leaves curl and become sticky; heavy infestations reduce flower bud development.
Control: Spray with insecticidal soap or neem-based product; blast off with water; allow natural predator populations to build where possible.
Vine weevil
Signs: Larvae destroy roots in pots, causing wilting and plant loss; adult beetles leave characteristic scalloped bite marks around leaf edges.
Control: Drench container compost with Steinernema kraussei nematodes in late summer; inspect rootball when replacing or dividing pot displays.
Keep lobelia erinus 'techno heat blue' pest-free
Healthy plants resist pests best. Get the basics right:
- What eats edging lobelia — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common lobelia erinus 'techno heat blue' problems & fixes
- Lobelia erinus 'Techno Heat Blue' watering schedule
- Lobelia erinus 'Techno Heat Blue' light requirements
- Full lobelia erinus 'techno heat blue' care guide
Lobelia erinus 'Techno Heat Blue' pests — FAQ
What is eating my lobelia erinus 'techno heat blue'?
Lobelia erinus 'Techno Heat Blue', bred for hot-weather tolerance, still faces slug and snail damage on young transplants and aphid attacks on soft growth. Vine weevil can be an issue in pots. The heat tolerance reduces stress-related susceptibility but does not eliminate these standard annual bedding pest threats.
How do I get rid of slugs and snails on lobelia erinus 'techno heat blue'?
New transplants and soft basal stems eaten at night; plants may be completely severed at soil level if slug pressure is high. Place iron phosphate pellets at planting; use copper rings or tape on container rims; patrol at night and remove slugs by hand.
How do I get rid of aphids on lobelia erinus 'techno heat blue'?
Colonies on tender shoot tips in warm conditions; leaves curl and become sticky; heavy infestations reduce flower bud development. Spray with insecticidal soap or neem-based product; blast off with water; allow natural predator populations to build where possible.
How do I get rid of vine weevil on lobelia erinus 'techno heat blue'?
Larvae destroy roots in pots, causing wilting and plant loss; adult beetles leave characteristic scalloped bite marks around leaf edges. Drench container compost with Steinernema kraussei nematodes in late summer; inspect rootball when replacing or dividing pot displays.