Artichoke is a warm weather perennial, so in most of the US it will need to be in potted plants or started 6-8 weeks before last frost. These plants do take quite a bit of space, so transplant to a large pot or corners of the garden with plenty of space.
70-80 Days to maturity
10-20 Days to sprout
Artichoke seeds per packet: About 75
Artichoke seeds per Oz: About 740
Artichoke seeds per Lb: About 12,000
Plant 1/4″-1/2″ 2-3 seeds per pot, thinning to strongest plant. Transplant 2–3′ apart in rows 3–6′ apart.
For more help with growing artichokes, see the Farmers Almanac page on them at https://www.almanac.com/plant/artichokes