Batsford Arboretum has had to close on a number of days because of high winds and rain.
Head gardener Matthew Hall said: "The weather has meant a bad start to the winter. We had a very good autumn and it pulled us back from the wet summer we had. You would normally expect a dry time heading into the winter but we’ve gone straight into the wet. It makes business that much more difficult."
Westonbirt Arboretum meanwhile has had to close its Garden Centre Group-run plant centre because of flooding.
Director Simon Toomer said that there were also concerns about an event coming up this weekend. "We have our Enchanted Christmas event this weekend when we light up the trees for the evening," he said. "Parking on the grass is a big issue."