I love the SDBs however for something later the intermediates are great plants with a strong growth habit. You might want to look at MTBs as well. They are both diploid & tetraploid although the flowers get to large for my taste. Look up 'Bangles' in plant files & see if there is a picture. It has a lovely little flower. Do you have any siberians? They are getting brand new colors rather than just blues & purples.
