The 40 learners working in Homebase garden centres across the UK have been studying with the college, gaining horticulture skills both in the classroom and outdoors.
Training is delivered from Winterbourne House and Gardens in Edgbaston by BMet staff and garden designer Adam Frost.
College department manager Darren Rudge said: "The Homebase Garden Academy provides a comprehensive professional development programme that BMet is pleased to be part of.
"The one-year programme includes a knowledge base in planting and landscaping, as well as horticulture and IT skills, which the learners can utilise in their current roles and throughout their gardening and retail careers."
He added: "By studying at Winterbourne Gardens, the students can complete gardening projects on land previously used by the BBC to film Gardeners’ World. The experiences they gain will ensure they are industry-ready."
The students are working towards a Royal Horticulture Society (RHS) Level 1 Award in Practical Horticulture.
Homebase gardens head Jon Kemp said: "Our Garden Academy was launched with Adam Frost in 2013 as a way of providing those with a passion for gardening a pathway into a career in horticulture.
"We’re delighted to be working with BMet to equip our students with the skills they need to help our customers create gardens they love."