Pest identification
What's eating my orbea decaisneana?
Mealybugs
Signs: White woolly colonies at stem bases, tips, and joints; sticky residue; distorted new growth.
Control: Spot-treat with isopropyl alcohol. Apply neem oil or insecticidal soap spray every 7–10 days for three or more cycles, covering all stem surfaces thoroughly.
Scale insects
Signs: Small brown or tan disc-like bumps adhering to stems; yellowing or pitting of stem tissue beneath the scale covers.
Control: Scrape off scales manually with a soft brush or fingernail. Apply horticultural oil or neem spray, repeating weekly for a month to catch crawlers.
Spider mites
Signs: Stippled, dull stem surface; fine webbing in protected crevices; worse in hot, low-humidity settings.
Control: Rinse stems with water, then spray with neem oil or insecticidal soap weekly. Improve ventilation and avoid placing the plant near radiators or hot windows.
Keep orbea decaisneana pest-free
Healthy plants resist pests best. Get the basics right:
Orbea decaisneana pests — FAQ
What is eating my orbea decaisneana?
Orbea decaisneana is a stapeliad houseplant grown for its striking star-shaped flowers. Like most members of its family it is most frequently troubled by mealybugs. Spider mites and scale insects can also colonise its succulent stems in dry indoor environments. Good light, airflow, and lean watering are the best defences.
How do I get rid of mealybugs on orbea decaisneana?
White woolly colonies at stem bases, tips, and joints; sticky residue; distorted new growth. Spot-treat with isopropyl alcohol. Apply neem oil or insecticidal soap spray every 7–10 days for three or more cycles, covering all stem surfaces thoroughly.
How do I get rid of scale insects on orbea decaisneana?
Small brown or tan disc-like bumps adhering to stems; yellowing or pitting of stem tissue beneath the scale covers. Scrape off scales manually with a soft brush or fingernail. Apply horticultural oil or neem spray, repeating weekly for a month to catch crawlers.
How do I get rid of spider mites on orbea decaisneana?
Stippled, dull stem surface; fine webbing in protected crevices; worse in hot, low-humidity settings. Rinse stems with water, then spray with neem oil or insecticidal soap weekly. Improve ventilation and avoid placing the plant near radiators or hot windows.