Common lambsquarters is a summer annual broadleaf weed found in gardens, farmsteads, barnyards, roadsides, and row crops such as corn, soybean, sugar beet, and potato. It grows well in disturbed, fertile soils and emerges early in the season. It is a heavy seed producer; noted to produce an average of about 70,000 seeds per plant. Seeds can stay viable for over 20 years, so removing plants before they set seed is important.