Chenopodium album

Lamb's Quarters Identification & Control

Lamb's Quarters, also known as Goosefoot, White Goosefoot, or Pigweed, is an exceptionally common, highly aggressive summer annual broadleaf weed in the amaranth family. Native to Europe but thoroughly naturalized globally, it ranks as one of the most damaging agricultural weeds in the world. It features upright, grooved green-purple stems and distinctive, goosefoot-shaped leaves covered in a highly unique, white, powdery waxy coating that protects the plant from dehydration and chemical herbicides.

Sunlight Full Sun

Watering Tolerance Low to Moderate

Soil Adaptability Rich / Organic / Any Soil

Growth Temp 10°C - 40°C

Danger / Toxicity Pet Toxic / High Oxalates

Botanical macro photography of Lamb's Quarters (Chenopodium album) - Plant AI care and control database

How to Identify Lamb's Quarters

An upright annual with purplish-grooved stems, goosefoot-shaped leaves showing a white powdery (mealy) coating underneath, and small green flower clusters.

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Silvery Powdery Coating: Leaves, especially young ones and leaf undersides, are covered in a highly distinct, white-grey powdery or mealy waxy coating.
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Goosefoot-Shaped Leaves: Alternate green leaves (3 to 10 cm long) are shaped like a goose's webbed foot, with coarse, irregular teeth along the margins.
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Grooved Purple Stems: Upright stems (up to 5 feet tall) are highly grooved and ribbed, frequently showing bright purple-red stripes at leaf joints.

💡 Foraging Fact: Lamb's quarters is an exceptionally delicious wild spinach! It is highly nutritious, packed with iron, calcium, and vitamins A and C. Once washed and cooked, it tastes better than cultivated spinach.

Complete Care & Management Guide

Access highly technical, scientific management directives to control or cultivate Lamb's Quarters effectively.

Highly drought-tolerant once established due to its extensive fibrous roots and the white waxy leaf coating that prevents water evaporation during dry summers.

Controlled moderately by early cutting. Pruning before the green spikes flower prevents seed production. Cut stems will quickly sprout lateral flower shoots close to the ground.

An extreme nitrogen accumulator. It thrives in rich, highly composted soils, serving as a direct indicator of highly fertile vegetable garden beds.

Requires Full Sun to thrive. It cannot tolerate shade and will fail to grow under a dense forest canopy or beneath competitive, tall fescue grass shading.

Prefers rich organic loam, tilled agricultural beds, and compost-rich garden soils. It struggles in sterile sand dunes.

An incredibly prolific seeder. A single plant can produce up to 75,000 tiny black seeds. Seeds have a tough outer coat and can survive dormant in soil for over 40 years.

A summer annual. Germinates in spring (soil temps above 50°F / 10°C). The entire plant is completely killed by the first hard winter frost, leaving seeds.

Features a short, branched taproot with a dense network of fibrous lateral roots. It is exceptionally easy to hand-pull due to its shallow root anchor.

Targeted heavily by leaf miners, which chew winding white tunnels through the leaves, acting as a helpful natural biological control.

Subject to **Downy Mildew** and **Fungal Spots** under humid weather, though diseases rarely kill the weed before it successfully seeds.

To control Lamb's Quarters organically, hand-pull young rosettes in spring before they flower, use a hoe to scrape seedlings, and mulch garden beds heavily to block seed light.

Common Diseases & Treatment

Leaf Miner Attack

Symptoms: Symptoms: Winding, papery white-to-brown tunnels snaking through the goosefoot-shaped waxy leaves.

Action: Action: Encourage biological control. Leaf miners damage the foliage heavily, weakening the weed's photosynthesis organically.

High Oxalate Poisoning

Symptoms: Symptoms: Pets consume large quantities of raw leaves, leading to drooling, weakness, and potential kidney issues.

Action: Action: Keep pets away from large overgrown patches. Boil or steam the leaves if harvesting for human consumption to dissolve the oxalates.

Frequently Asked Questions

Why is it called 'White' Goosefoot or 'Lamb's Quarters'?

The name White Goosefoot comes from the leaf shape, which looks like a goose's webbed foot, and the white, mealy powder coating the leaves. 'Lamb's Quarters' refers to historical English festivals where lamb was eaten with this spring wild green.

Why does it have a white powdery coating on its leaves?

The powder consists of microscopic, water-filled waxy hairs. This coating acts as a highly effective barrier that protects the plant from drying wind, hot summer sun, and prevents water-based chemical herbicides from sticking.

Is it toxic to dogs?

It is rich in oxalic acid. Eating large raw quantities can be toxic to dogs, cats, and sheep, as oxalates bind with calcium to form sharp crystals that can damage kidneys. Small cooked quantities are safe but raw overgrown clumps should be avoided.

How do you control Lamb's Quarters organically?

Because it has a shallow root system, it pulls up effortlessly. Hand-weed in late spring before the green flowers open, and apply a thick layer of organic mulch to keep dormant seeds in complete darkness.