Alton Garden Centre director Andy Bunker says: "This weekend the sun shone. The plantaria was up exactly 85.1% on 2016.
Bunker said there was "no other factor such as Mother's Day that helped the sales. It was not a bank holiday, just the good old weather factor".
Bunker said he was "somewhat dismissive of the Brexit effect, while I fully understand there are interesting times ahead." Weather would always be the main factor helping sales of plants, he maintained.
He said keener gardeners were out in force, with trolley spend 50% more than during peak season. He added that shoppers were coming in to buy plants, rather than at peak season when there was more footfall but lower average spend.