Chick Wasitis of Bridgewood Gardens in Maryland registered this hybrid of H. 'Uncle
Albert' × unknown in 2008. It forms a semi-upright plant of medium size with
bright red petioles.
"2008 Registration: H. ‘Mustang Sally’
This was registered with incorrect parentage as [H. ‘Uncle Albert’ ×
H. plantaginea] It should have been [H. ‘Uncle Albert’ ×