I have considerable trunk space above and below the graft line.  The graft union is nicely done and is barely noticeable.  It is a ~ 2 year old Cara-Cara from 4WindsGrowers.
Can I t-bud some new varieties above and below the graft line?  Where on the trunk (above or below) will increase my chance of t-bud sprouting?  Is it even recommended to graft around the union/trunk?
I'm in a t-budding frenzy.... 
 
 
Thanks.