Arisaema ringens 'Black Mamba' is a clone that we selected many years ago for having the most intensely black-purple stalk that we had seen with this species. This is only the second time that we have had enough to share. Just as with the species, A. 'Black Mamba' emerges early in the season...March in NC. The near-black stems emerge with the leaves tucked in behind the cobra head-shaped inflorescence. Just as the leaves unfurl, the sinister flower head is presented for all to see. This fast multiplying clone makes a 2' wide clump...best in fertile but well-drained garden soils.