Rowan Byrne, a marine biologist, of Greenfields, spent three days with pal Jamie Clabburn transforming the 22ft-long roof into a haven for flowers, insects and bees. Rowan, who works for Mott MacDonald Ecology Division, Cambridge, said: I think everyone should do their bit where they can and support mother nature. The pals reinforced the roof before laying a waterproof lining, 10 bags of compost and 46 plants. Rowan added: Im not sure if it is the first rooftop garden in St Ives, but I think it is probably the first one in Greenfields. There is a serious educational message here but it has also been fun. A bit more rain would help though.