Sowing: sow arugula in full sun or partial shade, 1/4" deep and 2-5" apart in rows 8" apart. Additional harvesting, plant a new crop every 2.5 weeks until the heat of summer; arugula tastes best when grown as a spring or fall crop. Excess heat may change taste to bitterness in the leaves. For a fall crop, plant the seeds in late summer. Arugula also grows well as a container plant, or throughout the winter in a greenhouse. Be cautious of excess frost but some frost is tolerable. Cover if necessary. Harvest 2.3 weeks after planting or when leaves are 2-3 in long, cut near soil. All our seeds are Home Grown in the USA - Isla's Garden