Use individual, small pots for each seed. Soak the seeds in water overnight, then plant 1/4" deep (1/2 cm) in a mix of 1 part potting soil, 1 part perlite or pumice, and 1 part coarse sand. Water until evenly moist. Keep at about 66-74°F (18-23°C) in a bright spot. Ensure that the soil surface doesn't dry out. If you use a heating mat, avoid letting the soil get too warm.
Most of the seeds should sprout in 1 to 2 months, but allow up to 4 months for any slow ones, especially in cooler temperatures. Give some sun when they sprout, but shade them strong afternoon sun initially. Increase the sun exposure as they grow more leaves.
Echiums are sensitive to root disturbances, so avoid letting the soil ball break apart when transplanting (watering it first helps keep it together). For the first 2 weeks after repotting, shade from strong sun exposure, and give no fertilizer.
More cultivation tips for this plant are here.
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