Because of the extent of his condition and his pain and suffering, the vet recommended putting him down as corrective treatment could take months or even years.
When asked in an interview why he had not got his pony the correct treatment, Booth replied: "Out of sight, out of mind."
He said he knew horses needed their hooves trimmed every six to eight weeks and admitted to doing most of the work himself.
SPCA chief executive Andrea Midgen said SPCA inspectors were coming across laminitis too often and when not managed properly it meant horses could not access grass and feed, were not being given pain relief or getting corrective trimming.
"Poncho lived in a state of quiet desperation for a long time, suffering immeasurably ...
"Horses have complex needs and require specific care from their owner. It is unacceptable to simply put a horse in a paddock and forget about it. This case is a perfect example of what happens when a horse is neglected, resulting in the suffering of an animal that was entirely preventable."