A retired engineer from Crwbin near Carmarthen, John is one of a dedicated band of volunteers working at this historic place.
He travels all over South and West Wales delivering talks and lectures on Aberglasney and its history to clubs, societies and other organizations.
He's catalogued and put onto a database most of the photographs owned by the Aberglasney Trust, along with drawings which have been used by contractors throughout the restoration.
He volunteers one day a week "usually on a Sunday" to work in the gardens, but also can be called upon to give guided tours.
"I first heard about what was going on here when the gardens opened to the public in July 1999 and thought I'd go over to see what it was all about," said John. "I went with friends and really fell in love with the place.
"I felt that I really wanted to be part of what was going on here and I started by volunteering for three days a week. Aberglasney is quite a magical place and I love the peace, the tranquility, the silence and the beauty of it.
"I get the opportunity to meet and talk to so many fascinating people from all over the world; some are gardeners, some historians and some are just interested."
So does he have a favourite area of the garden? "My favourite part of the garden is the terrace outside the café, where I can look over the pool towards the upper and lower walled gardens and watch the swifts and housemartins putting on wonderful flying displays.
"It has become more than a hobby to me and I now find it difficult to envision my life without being able to visit and work in this most rewarding and extraordinary place."