Unusual Leaf Coloration on Knock Out Roses: Mosaic Virus or Chemical Damage?

Unusual Leaf Coloration on Knock Out Roses: Mosaic Virus or Chemical Damage?

Pink and white leaf patterns are not typical of rose mosaic virus (usually yellow). Such discoloration often indicates chemical uptake—herbicide drift, soil contamination, or fertilizer imbalance affecting sap composition.

Next Steps

If you suspect mosaic virus, I can connect you with a specialist. Otherwise, investigate recent chemical applications nearby and consider soil testing.