wrote in message
ps.com...
There was a yellow rose planted behind my new house when I bought it
last year. The woman next door said it had been there for years,
probably ten. I replanted it in the front yard. The blooms are now
pink. I know this sounds bizarre. Is this possible? What happened?

It might have reverted to rootstock. Many modern
roses are grafted. One rose - often a species rose -
is the rootstock. The other rose - the one with the
desirable blooms - is the scion.

Sometimes the scion will die and the rootstock will take
over. Some of the rootstock varieties will bloom.
Bloom color is often different between scion &
rootstock.

Another possibility: Some rose bloom colors are
blends - for example, yellow and pink, but showing
as mostly yellow. Planted in different soil type (which
can vary greatly even in one yard), different amount
of sun, different amount or kind of food, water, etc.,
one color might dominate over another.

Gail
near San Antonio TX Zone 8 USA