Using the name Horti Link, it will provide a distribution network for growers to deliver to garden centres.
Horti Link will offer twice-weekly deliveries across the UK between February and September. The minimum volume required is a trolley, but the company is aiming to cut the minimum down as garden centres are increasingly interested in buying by the shelf.
Van der Haas commercial director Tom Butter said: "The market is changing. The volumes going into garden centres are smaller these days, and growers are finding customers a long way from where they are based. Many are getting rid of their own transport and are using transport companies.
"We are suggesting companies keep part of their fleet to do local deliveries but use us for their overspill," he explained.
Van der Haas has already taken on the deliveries of Dudley Transport's customers. Dudley Transport was the distribution company, owned by Hertfordshire-based Kinglea Plants, which ceased operations in October.
Van der Haas is a 40-year-old plant transport company based in Delft, The Netherlands.