Sales in many places were hit by poor weather, but Bourne Valley managing director Paul Elding said: "It is has been a very good weekend and Monday had double the turnover of last year - £40,000 rather than £20,000. Why, I couldn't say, but it was wetter last year."
Downtown Garden Centre in Lincolnshire also reported a "buoyant" weekend, with Saturday and Monday up on last year.
But a number of centres saw no improvement on last year. Hillier managing director Andy McIndoe said: "It has been a typical August bank holiday - grey and quite cool. Sales were about as expected. Some centres were up and some down, but overall on a par with last year."
Squires managing director Dennis Espley added that it had been a disappointing weekend. "Most of our customers are on holiday and we tend to wait for the serious gardening season to start the weekend after next."
Turnover was up about five per cent, including catering.