Yes, certainly they could have different Mom's. The potential number of different NevHaze F1s that Shanti holds is limited only by the number of Nevil's Haze seed he kept hold of from the 90s. I assume he had plenty.I agree with you the plant dis-similarities could be due to the outcrossed GW vs the more inbred NHM. But I still think they are different moms. Another big difference in the plants is the rate of occurrence of intersex traits: 3/4 GW plants vs 1:3 NHM plants. Suggests to me the GW mom is a bit wilder, more feral.