Mosaic Virus on hoya
What's Happening
Hoya Chlorotic Spot Virus (HoCSV) is a novel tobamovirus that causes distinct foliar symptoms including chlorotic (yellow) spots, ringspots, and line patterns. It is mechanically transmissible (via sap on tools/hands) and systemic, meaning it resides in the entire plant. Symptoms often mimic nutrient deficiency or light stress but are distinguished by their organized, geometric, or ring-like appearance.
How to Fix It
- 1
There is no cure for viral infections in Hoyas; infected plants must be isolated or destroyed
- 2
Sterilize all cutting tools with 70% alcohol or bleach between EVERY plant to prevent spread
- 3
Wash hands thoroughly after handling a symptomatic Hoya
- 4
Do not take cuttings from a plant showing chlorotic ring patterns
- 5
If the plant is high-value, maintain strict quarantine and do not share propagations
How to Prevent It
Only purchase Hoyas from reputable growers who screen for viruses. Avoid 'mystery spots' that form organized rings. Practice rigorous tool hygiene in your collection.