Storms with up to 100mph winds forced South Downs Nurseries in Hassocks, West Sussex close its coffee shop after part of the roof blew off.
Branch Manager Mark Hillyard Tates of the Sussex Garden Centre group said: "The left hand side of the roof blew away. It was blowing a gale inside and out but there were no injuries at all and one couple continued eating their sandwiches.
"We had to close the cafe but we were able to re-open the next day at 2pm after re-building the roof."
Meanwhile, Bushmills Garden Centre in Northern ireland, part of Creative Gardens, had a glasshouse badly damaged by the winds.
Director Oliver Gass said the structure was dangerous and has appealed for advice as to how to make it safe and workable again.