Built by HND and BSc students, the garden features intertwining rills of plants representing a double helix and the bonds of family, a wildlife-friendly pond and a living wall of lettuce and other edible crops and a seating area for socialising.
Smith said the award had given him encouragement for the future and thanked fellow students for their help.
"We started planning the garden in October, so it’s been a long process and we’ve put in a lot of hours over the last week getting the garden complete, but it’s all been worth it," he added.
A garden featuring a yellow brick road and an Emerald City made of green glass bottles was Pershore’s Wizard Of Oz-themed entry into the school garden category. Built by year ten pupils from schools close to the college and Pershore tutor Paul Bearcroft, was awarded Best in Show and Highly Commended, winning a prize of £150 from the Campaign for the Protection of Rural England.
College students on the HNC and HND Organic and Sustainable Horticulture courses also sold organic herbs, plants, chillies, tomatoes, cucumbers and apple juice at the show.
Assistant principal Julia Page said she hoped the success at the show would encourage more people to study at Pershore College, which offers courses in arboriculture, beekeeping, production horticulture, organic gardening, amenity horticulture and garden design.
The college recently won the contract to provide education for the Royal Parks apprenticeship scheme.