A cheque for £443 was presented to the David Colegrave Foundation earlier this month.
The autumnand spring-flowering wallflower was bred by Floranova to be sold to support the foundation.
Trustee Peter Seabrook said it meant breeder, growers and retailers are all working together to raise funds to help young entrants into horticultural training.
Almost a million seeds and plugs have been sold so far and the trustees have recently made grants to four more horticultural students.
There are also four scholarships: a US $4,500 (£2,790) Ed Markham Scholarship to work in North America; a £2,500 Garden Centre Group scholarship for a new joiner; a £2,500 Ball Colegrave scholarship for someone already in the industry to gain experience in bedding and pot plants; and the Floranova Scholarship for a student to cover plant breeding.