Yep...Notice how the burrs all around both peticles are about the same size, configuration and distance from the base of the pedicle. Not to mention, they both have kind of a heart shape to them.

Especially after seeing the pedicles, I would say they are definately from the same year....he grew them during 2006 and they were laying out there a year before you found them.

Congrats again on a great find!