Crazytunia® Black Mamba Petunia is being touted as the absolutely, hands-down best black petunia, and for good reason! It is a strong, fast grower that offers non-stop color all season long. The eye-catching Crazytunia flowers are self-cleaning, love the heat, and have excellent weather tolerance. Petunia flowers produce a sugary nectar that hummingbirds and butterflies love.