Aylett Nurseries director Adam Wigglesworth said: "June was ok. We weren't up. It started pretty well then got zapped by the rain. We were -2 per cent and I've had a few comments from other people that were similar."
Wigglesworth added that July had been "pretty slow" adding: "Thank goodness for May." But he said figures were coming off the back of a good 2015, so 2016 was proving to be a "solid year" with no "doom and gloom", with sales running about -2 per cent year-to-date so far.
The HTA president said the industry was well placed to be able to deal with Brexit, especially if it meant people taking more holidays at home.
Consumers' spending increased the week after the EU referendum but there were signs of shoppers adopting a more cautious mindset, according to new data from Barclaycard.
In the week between June 24 and June 30, they noted a 2.14 per cent increase in consumer spending on Barclaycard credit and debit cards, compared to the previous week.
There was some mixed underlying news, as spending in pubs and restaurants fell back 0.44 per cent and 0.46 per cent respectively in the same period.