After smashing through a rear window with one of the site’s pickaxes, they broke a window to get into the office and then tried to carry the safe off in a plastic wheelbarrow.
The raiders abandoned that plan when the wheelbarrow buckled and broke under the weight of the safe, and instead turned to a wheelchair kept on site for visitors to use.
A garden centre representative told HW: "The police didn't recover anything but are still investigating. We've installed a complete new security system now. It's a substantial investment."
Around £500 cash was in the safe. The gang also got away with £40 in a till taken from the on-site cafe which was found smashed on the fields and an Apple iPod Touch.