50 days — Also known as 'Monstrueux de Viroflay,' the plants can reach up to two feet in diameter. The leaves of 'Viroflay' are large, dark-green, smooth, crisp, and are about ten inches long.
A French variety whose parentage and date of introduction is unknown, we do know that it dates back to at least the mid-nineteenth century. It is thought to have been introduced into the American seed trade in about 1866.
Each packet contains four grams, which is approximately 300 seeds.