A gardener from the National Botanic Garden of Wales is taking part in a week-long job swap at Prince Charles's Gloucestershire estate.
Mr Berry hopes to pick up a few tips at Highgrove
Malcolm Berry, from Ceredigion, is hoping to pick up a few tips at Highgrove which is renowned for its organic set-up.
Mr Berry, 37, is responsible for the organic section at the Carmarthenshire attraction in Llanarthne.
It is the first time the garden has linked with Highgrove in this way.
Mr Berry, from Llanarth, near New Quay, started work at Prince Charles's estate on Monday, but he is unlikely to meet his Royal host, say officials at the botanic garden.
The idea of a job swap came about when the botanic garden's senior horticulturist Laura Davies met David Howard, Prince Charles's head gardener, at a conference.
Before starting work at Highgrove, Mr Berry said: "I'm really looking forward to this excellent opportunity to see at first hand what must be one of the best known organic set-ups anywhere.
"Hopefully, I'm going to learn something very important about organics from some experts in the field."
A gardener from Highgrove is expected to join staff at the National Botanic Garden next week.
Mr Berry has worked in the organic fruit and vegetable quarter in the historic double walled garden at the Carmarthenshire attraction for three years.
He said: "In my time here, I've begun to put my mark on what's being grown.
"I've introduced a fruiting bed and this year we have yellow climbing beans, dwarf French beans and the only true climbing courgette - tromboncino."