i have an area between my house and my neighbors'. it is only about 6 feet between the houses and my neighbor, who doesn't use it...as it is technically his land, said I can use it for a vege garden. however, not a lot of sun gets down in between the houses. wondering if there is any way to reflect the sun's light down in there. the sun gets to about 4 feet from the ground but not all the way down. could i use mirrors? anything like that? thanks for your help.