Troubleshooting
Red Frangipani problems — and how to fix them
Red Frangipani (Plumeria rubra) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Fungal stem or root rot
The most common and serious problem, almost always caused by overwatering in cool conditions; ensure fast-draining soil and withhold water at the first sign of soft, discoloured stem tissue.
Rust (Coleosporium plumeriae)
Orange pustules appear on the underside of leaves, especially in humid conditions; remove affected leaves, improve air circulation, and treat with a copper-based fungicide.
Mealybugs and spider mites
Both pests thrive in warm, dry indoor conditions during the growing season; treat with neem oil or insecticidal soap and increase humidity slightly to deter mites.
Prevent red frangipani problems before they start
Most red frangipani issues are care-mismatch, not bad luck. Dial in the basics:
Looking for red frangipani in general rather than its problems? Read the full red frangipani care guide — light, water, soil and feeding.
Red Frangipani problems — FAQ
Why is my red frangipani fungal stem or root rot?
The most common and serious problem, almost always caused by overwatering in cool conditions; ensure fast-draining soil and withhold water at the first sign of soft, discoloured stem tissue.
Why is my red frangipani rust (coleosporium plumeriae)?
Orange pustules appear on the underside of leaves, especially in humid conditions; remove affected leaves, improve air circulation, and treat with a copper-based fungicide.
Why is my red frangipani mealybugs and spider mites?
Both pests thrive in warm, dry indoor conditions during the growing season; treat with neem oil or insecticidal soap and increase humidity slightly to deter mites.