How do I reconstruck a (half whiskey) barrel for honeysuckle vine that is rooted?

Let me suggest another option. I built a planter using pressure treated landscaping timbers.cut about 1 foot long. Lay them on the ground side by side with about an inch of space between them. then get a roll of plumbers tape (this is a galvanized strip of thin metal perforated with holes about every 1 inch; a roll is 50 feet long) Lay the tape across the whole row of timbers 2 or3 inches from 1 end and secure each timber to the tape with a screw. Do the same thing 2 or 3 inches from the other end. Now you can stand them up on end and wrap them into a circle around the existing remnants of the whiskey barrel. You will end up with an attractive planter that sort of looks like a whiskey barrel and it will last for 50 years or so. Of course you'll have to do the math to determine how many timbers it takes to form a circle of the circumference desired. The plumbers tape will be on the outside of your planter,resembling the metal bands of the barrel. I made mine in a 20 foot circle around a hickory tree, filled it with soil and planted it full of herbs. This was 25 years ago and it still looks good. I get compliments on it even after all these years.