Crape Myrtle Haircut

 This past summer and fall one of our Crape Myrtle trees has grown tall enough to interfere with the sun on the solar panels so yesterday I cut it back.  The last time I trimmed it I cut it to 10 to 12 feet; this time I cut it to 5 to 6 feet.  It will be interesting to see what it looks like in the spring since I probably violated the rules for proper pruning.  In fact on the radio garden show this morning, a caller asked about pruning his Crape Myrtle and the host said to wait for the spring.  Oh well too late for me.