Ya...they are very free flowering.
Ouch!.....You only get the Feugo correct for the last picture.
The names as to follow the pictures respectively are:
1. T. ionantha var stricta
2. T. Peewee
3. T. ionantha hyb. (my hyb.)
4. T. ionantha Feugo.
You can try 30% shade cloth. They will do better than a 50% one. And also you can try with different locations. I think this will help al ot.