Why Did My Yellow Rose Turn Red? Understanding Sports, Suckers, and Color Stability

Two Possibilities

1. Genetic sport: A bud mutated back to a red ancestor. One branch stays yellow = chimera.
2. Rootstock sucker: Dr. Huey (red) growing from below graft. Flowers semi-double, not fully double.

Diagnosis

Dig beside the bush. If red cane originates below the graft knob, yank it off (don't cut). The yellow rose will return.

Planting More Roses

Colors don't "infect" each other. Plant all the varieties you want.