Lamb's quarters
Also known as
Common lambsquarters, White goosefoot, Fat hen, Bathua, Melde, White pigweed
Keep this plant’s care guide close at hand.
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Chenopodium album is a fast-growing, cool-season annual herb in the amaranth family, widely known as a nutritious wild green and a prolific agricultural weed. Plants range from 10–200 cm tall, with ridged, often reddish-tinged stems and variable, alternate leaves that are triangular to lanceolate with irregular, toothed margins. A distinctive whitish, mealy coating (farinose bloom) covers young shoots and leaf undersides. Greenish, apetalous flowers form dense, branched panicles, maturing to small, shiny black seeds. Native to Eurasia, it is now cosmopolitan across temperate and subtropical regions, thriving in disturbed, nitrogen-rich soils. Leaves and tender shoots are edible and spinach-like, rich in vitamins and minerals; seeds can be used like a pseudocereal. However, plants can accumulate nitrates and oxalates, especially under high nitrogen or drought stress, so moderation and cooking are advised. In gardens and containers it is extremely undemanding, tolerating a wide range of soils and moisture, yet it competes aggressively with crops. As a pioneer species, it helps colonize bare ground but can become invasive without management.
Taxonomy
Properties & Requirements
How to care for Lamb's quarters
Water
Lamb’s quarters tolerates short dry spells but produces the best, most tender greens with steady moisture. In garden beds, water deeply but infrequently, aiming to keep the top 5–8 cm of soil moist during establishment, then allow the surface to dry slightly between waterings. In containers, water when the top 2–3 cm are dry, ensuring free drainage and no standing water. Avoid chronic waterlogging, which reduces vigor and can promote root issues, yet prevent prolonged drought during seedling and harvest periods.
Light
Provide full sun for most vigorous growth and highest yields—aim for 6–8+ hours of direct light daily. Plants will tolerate partial shade (3–5 hours), especially in hot climates, producing milder leaves but potentially elongating and reducing density. In containers or indoors, use a bright south-facing window or supplemental grow lights delivering 12–14 hours of high-intensity light. Dense shade reduces flavor and biomass and encourages legginess. Good air movement helps keep foliage dry and reduces disease pressure.
Nutrients
As a hardy, nutrient-responsive annual, Chenopodium album needs little fertilization. Excess nitrogen encourages lush growth but increases nitrate accumulation in tissues, which is undesirable for food and livestock. For container or controlled cultivation, mix in mature compost before sowing and, if needed, apply a dilute, balanced organic feed (e.g., compost tea or 5-5-5) at half strength every 3–4 weeks. Avoid fresh manure and high-nitrate fertilizers. Maintain even fertility with organic matter, and prioritize soil health and moderate growth over maximum leaf size.
Temperature
Germination and growth are best in cool to warm conditions, roughly 15–25°C, with seeds capable of sprouting from about 5–30°C. Established plants tolerate heat if soil moisture is adequate, though leaves may toughen in hot, dry weather. Light frosts can damage foliage and hard frosts usually end the season. For container culture, typical indoor or patio temperatures of 18–27°C are ideal. Provide shelter from cold snaps and avoid prolonged exposure below freezing to maintain quality greens.
