Remove seat, padding, springs, webbing, all nails/tacks. Grind out burrs/nicks, putty any holes, PRIMER and paint. Attach the rubber on the bottom. Otherwise it works nicely with chicken wire and cloth. Fill in with soil and plants, often with slightly different heights - the highest in the back and hanging down.
Be on the lookout for "rusty junk" at yard and garage sales, barn sales or thrift stores. Another great time to look for treasures is during Spring clean-up when people throw their unwanted items on the curb! Just look at this cute little child size chair all worn and rusty...a perfect addition to this prim garden!