Boningale's turnover increased from £6.455m to £6.837m in the year to 30 September 2015, with profit before tax up from £444,000 to £489,000.
The company said the "upturn in construction, housing and retail industries within a challenging business environment" helped sales. It added: "The company's clients are under immense pressure to maintain turnover in a marketplace that has seen slow growth in the past year. This has led to prices coming under considerable pressure." Boningale, which bought Worfield Gardens in 2014, promises "further investment in infrastructure".
James Coles and Sons (Nurseries) results to 30 September 2015 saw "satisfactory" results with turnover up from £6.604m to £6.639m and operating profits at £105,000 up from -£31,000. Profit before tax rose to £5.156m after a capital gain from selling a parcel of land.
W Crowder and Sons saw turnover rise from £5.892m from £5.829m, with operating profits up from £103,000 to £267,000 in the year to 30 September 2015.
The company said: "Confidence and investment is returning to the construction and housing markets and the wholesale division and ecommerce are looking to benefit from this."
Crowders £1.56m turnover Horncastle garden centre sold to Wyevale Garden Centres for £2.2m in January 2016.
Both Coles and Crowders warned of the risk of plant health problems such as ash dieback.