pruning Eastern Redbud
Have an Eastern redbud put in by a landscaper at about 6 1/2 feet tall (? age) in early spring 08. I pruned some long shoots in standard 1/3 way part-way thru the season, expecting more branching.. but this year (now at near-end of summer) it's developed very long (5-6 feet) single shoots poking out all-around it, showing very little branching, if any. I just trimmed them, trying the same approach with the same goal. I haven't been able to find anything in books or online which tells me how this should best be handled to reach that goal... am I on the right track?
Thank you for any info/advice!