Kevin,
Since 'Silverine' proved itself to be such a good parent I do expect great things from these 'Silver Song' seedlings. I tried to exploit wulfenii's high compatibility as a derivative species to get crosses between 'Silver Song' and fuzzier plants like arachnoideum and grandiflorum hybrids. Should also have some extra wide silvers coming from crosses to 'Rita Jane' and other wide leaved varieties with powdery wax. Should be interesting to see what germinates.
Hopefully I do get some fun 'Bros' seedlings, lot's of rollers blooming in close proximity, but the only other Heuff around at the time was h. Jade. I probably wouldn't have made that cross intentionally but didn't think it poor enough to separate the two.
I think a larger 'Silver Song' would definitely be worth having, hoping I get a chance to see your seedling and that it's seedlings from your current project continue to push the boundaries on size.
-Sol
