Yellow Leaves on Winter Roses in Namibia—Not a Virus

Solid yellow leaves (not mottled/yellow veins) in cool winter temps (10–23°C) are normal seasonal dormancy, not virus. Rose mosaic virus shows bright yellow streaks, rings, or oak-leaf patterns. Your roses are shutting down for winter rest.

Winter Care

• Stop fertilizing.
• Water only to keep soil barely damp.
• No sprays needed—no disease present.
• Resume feeding in spring when growth resumes.

They’ll green up and bloom when temperatures rise.