Why a Pink Rose Turned Red After Moving: Rootstock Reversion

The Rootstock Revealed

Moving a pink rose to a sunnier spot in Hesperia, CA (High Desert) caused it to bloom red. The original variety died; the red flowers are from the rootstock—almost certainly 'Dr. Huey', a once-blooming climber with wine-red flowers.

How to Confirm

• Dig gently near the base. If the red canes originate below the graft union (the knobby bump), they're suckers.
• 'Dr. Huey' blooms once in spring for ~6 weeks.

Options

• Wait to see if pink canes return from above the graft.
• If not, dig out the plant—it's now a 'Dr. Huey' bush.
• If you like the red climber, keep it and train it.

This is not a color change from sun exposure; it's a genetic takeover.