Flash floods drove hundreds of people from their homes and devastated businesses around Lostwithiel and Mevagissey.
The Eden Project has never had to close before because of flooding but after flooding on 16 November the attraction closed until at least 21 November.
The main areas that have been hit are the Link building that runs between the biomes, the area around the ice rink and the Visitor Centre at the top of the site. The million-plus plants in the biomes have survived the torrential rains.
But despite the severe torrential rain and steep slopes at Eden the Green Team are " very happy" that the plants in its outdoor gardens have survived the floods and there have been no land-slides.
Don Murray from the Green Team said: "As a result of the well-knitted planting, and established plant beds, we’ve avoided major plant damage and land-slides. We’ve spent the day checking the plants thoroughly and it looks like the planting methods used over the past ten years have really helped to prevent any major damage.
"Like all gardeners we worry about our plants and are really proud to be able to say the plants here are as resilient as the Eden Project team."