Skip to main content

Lambsquarters

Chenopodium album L.


Family: Chenopodiaceae

Habit: summer annual


Ecology

Management:

Because young lambsquarters seedlings are very small and fragile, stirring of the top 1-2 inches of soil 2 to 4 times within the first month following tillage is highly effective at removing most of the individuals that will emerge during the season (Weed early & shallow). Organic mulches are highly effective for suppressing lambsquarters, but it is often best to reduce plant density by superficial weeding before placing the mulch. Dense planting helps control this weed in crops that will tolerate high density.

Because this species responds strongly to nitrogen, it is easier to control if nitrogen sources are applied after the crop plants are well established and competitive, or if nutrients are directed toward the plant rather than broadcast generally (Target nutrients and water).

Because the seeds are so persistent in the soil, removal of escapes from the garden before they set seeds is critical for long-term control.

Useful Management Techniques