Early green annual for summer harvests.
A green artichoke specifically bred for annual production, Imperial Star will produce well-developed artichokes the first year from seed. Plants become 1 1/2–3' tall and have an open growth habit. Each typically produces 1–2 primary buds, which average 3–4" in diameter, and 5–7 smaller secondary buds. Perennialization possible in Zone 9 and warmer; otherwise treat as an annual.