Tropaeolum majus The deepest, darkest, richest, ruby-black blooms grace tidy plants. For a dramatically thrilling display, Black Velvet provides maximum contrast to light-colored flowers or a provocative mix with purples and reds. Mounding plants reach 12 inches tall. By providing adequate water and clipping seed heads, your nasturtiums will reward you with a profusion of blooms from July to fall’s first frost. The flowers make a lightly spicy edible garnish too! Approximately 7 seeds per gram. Germination code: (4)