Good point. So why use red mulch?TZ -OH6 wrote:I grew next to an old red barn until it collapsed under heavy snow this spring, not that there was much red left on it. Old red barn paint is lead based, which shouldn't affect tomatoes, but I wouldn't grow any root or leaf crops next to a barn.
Red wall vs white wall vs white wall would be a good experimant. White theoretically reflects all light so would reflect the red as well.