Profit after tax was £1.48m, up from £1.02m.
Gross margin rose from 15 per cent to 18 per cent.
Director Peter Gibbs said the company has cash reserves of £2.4m, up from £1.5m last year.
The business supplies garden designers and landscapers, local authorities, schools, sports facilities, private estates, stately homes, businesses and over 100 garden centres, as well as gardens at Chelsea and Hampton Court Flower Show. The nursery is "able to source almost anything that is commercially grown" and also has a large presence at Covent Garden Flower Market.