Amaranthus palmeri seed | Palmer Amaranth, Palmer’s Pigweed
LATIN NAME: Amaranthus palmeri COMMON NAME: Palmer Amaranth, Palmer’s Pigweed
Botanical Profile
Palmer amaranth is native to the arid southwestern United States and northern Mexico, growing as a tall, fast, upright annual with distinctively long-stalked, diamond-shaped leaves and, on female plants, dense, spiny flower spikes that can reach considerable length. Individual plants are either male or female, and a single female plant can produce an extraordinarily large number of seeds in a single growing season.
Science & Conservation
Palmer amaranth has become one of the most intensively studied agricultural weeds in North American row-crop agriculture, since it combines extremely fast growth, prolific seed production and a well-documented ability to evolve resistance to multiple different classes of herbicide, including glyphosate, in a remarkably short number of growing seasons. This combination has made it a central case study in modern weed science and integrated pest management research, as agronomists work to develop sustainable strategies for controlling it in major crops such as cotton and soybeans across the southern and midwestern United States.
Landscape & Practical Uses
In its role as a major agricultural weed, Palmer amaranth’s primary significance is as a serious management challenge for row-crop farmers, and understanding its biology, seed dispersal and herbicide-resistance mechanisms is directly important to maintaining productive, sustainable crop yields across affected regions. Outside agricultural contexts, its young leaves are technically edible in the manner of other amaranth species, though its main practical relevance today is firmly agronomic rather than culinary.
Growing From Seed
Sow the fine seed onto the surface of a loose, well-drained mix without covering it deeply, keeping conditions warm and consistently moist. This species is naturally extremely fast-establishing and vigorous, true to its reputation as one of the most competitive weeds in North American agriculture, so full sun and warmth are all it typically needs to grow rapidly.
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Explore other seeds in this collection: Amaranthus retroflexus (Redroot Pigweed), Amaranthus tricolor (Joseph’s Coat), Amentotaxus argotaenia (Catkin Yew), Fragaria virginiana (Virginia Strawberry).