Lorraine Williams opened Knot Just Blooms in Portchester with business partners Jason and Debbie Brooker.
On how she felt about the shop being finally open, she said: "I feel a bit nervous, a bit emotional all at the same time, but I feel really excited because I didn't think this was ever going to happen. I have to thank my business partners and their family, my daughter and the girls that work at the shop for getting me to this point. It's a good family affair! I also wouldn't have done it without my tutor Emma Dunaway from Highbury College because she's taught me everything I can do now, I'm really grateful to her."
The 47-year-old, from Portchester, first thought of starting her own business after completing a work experience placement while studying at Highbury College.
She named the budding business in memory of her husband Justin, who died 18 months ago.
The mature student will concentrate on the business for a year before returning to Highbury College to complete a Level 3 Diploma in Floristry.
She is already employing a former Highbury student and plans to offer work experience to future College students.
Lorraine, who gained a Distinction in her Level 2 course, said: "My course was really good, I met some really lovely people and made some good friends. I wouldn't have done this without Emma, the rest of the girls on the course and to Charmaine of course. I would definitely recommend Highbury's floristry course. Everyone at the College is lovely, very supportive and all the staff have been brilliant. I had support from start to finish."