To unveil the new garden, players from his favourite rugby team attended the ceremony.
Gloucester Rugby player Jack Clement presented Lucas with a T-shirt signed by all the members of the squad.
“I think hopefully he’s happy to receive that because it means a lot to him and it means a lot to me,” Clement said.
Lee said the whole family were big Gloucester Rugby fans.
The Cheltenham-based charity WellChild transforms gardens across the country, helping those with complex needs.
Chris Capewell, from the charity, said: “It’s genuinely life-changing for these families so this summer we’re going to be doing 30, maybe 40, of these kind of projects across the country.”