Early artichoke seed Imperial Star

annualsummerhybrid

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. Perennial in Zone 7 and warmer; otherwise treat as an annual. Avg. 10,500 seeds/lb. Packet: 25 seeds. SCIENTIFIC NAME: Cynara spp. CULTURE: Artichokes and cardoon require very fertile, well-drained soils with a pH of 6.5-7.0. Sow artichokes indoors 8-12 weeks before last spring frost date. Cardoon is more vigorous and can be started later, 6-8 weeks prior to last frost date. Plant 2-3 seeds per cell in 50-cell plug trays or individual containers 1/4" deep. Germinate at 70-80°F (21-26°C) and grow at 60-70°F (15-21°C) day and 50-60°F (10-15°C) night. Transplant 6- to 12-week-old plants to the field 2-3' apart in rows 3-6' apart.