18 months to mature. This is an old standard variety that can be grown as an annual or perennial. Plants grow up to 6 feet tall with silver-green leaves. Edible flower buds (chokes) are made up of thick fleshy scales and solid center (hearts). Chokes are medium green in color with a slight purple tinge near the base and are 3 to 4 inches in diameter at fresh market. Most thorns have been eliminated. There is some variability in choke type and maturity.