Timmermans Roses is closing after more than a century in business. Owner John Timmermans said he is retiring after growing the flowers for more than 50 years.
"I think it just got difficult in the past couple of years because of the weather and I have no family in the business - it's only me," he added. "I'm 68 years old and there's lots of reasons, not just one. The time is right."
Timmermans grows 400,000 roses every year and will grow 350,000 in this its final year. The last two full-time staff will be made redundant in the summer.
Growing guide Find That Rose only lists Timmermans and one other grower, Dalestorth, from the former rose-growing area of Nottinghamshire. Timmermans said: "I don't know what will happen to the site, I've not decided, but options include development.
"The market is not that buoyant at the minute. We've just been a little bit spoilt - in the last 10-15 years we've seen some stability. Looking back to the 1960s, 70s and early 80s the market was like the potato market, way up one year and down the next. The rose trade comes and goes and will come back, but I didn't feel like struggling for five years until it does."
The company supplies a range of garden centres and nurseries in the UK "but we've never gone down the contract or multiple route". He said he "does not envy" growers who deal with multiples and prefers "honest to goodness independents". But he admitted: "If you want to be big you have to deal with the multiples to get volume".
He began work in 1963 at the business, which was opened in the Woodborough valley and grows on 7ha.
Timmermans is a third-generation rose-grower, his father being one of five brothers working for the family's rose-growing business in Herten, Holland.
Garden writer Peter Seabrook said there were once 20 growers operating in the area, including famous names such as Wheatcroft.
Guernsey grower Thirty successful years
Guernsey Clematis Nursery, which has 20-25 per cent of the world market in young clematis plants, is celebrating 30 years of successful growing.
But owner Raymond Evison pointed out that Guernsey growers are now almost extinct after VAT changes in 2012. He said with the loss to the UK of Channel Island Plants, Thompson & Morgan and others, and tomato growing ending, a new urban plan that might allow building on old glasshouses is the hope of many ex-growers.