Persicaria amphibia, commonly called longroot smartweed or water knotweed, is a flowering perennial plant in the knotweed family of Polygonaceae native to Africa, Asia, Europe, and North America. P. amphibia has both a terrestrial form, and an aquatic form. Thick stems grow from rhizomes and either grow upright, creep, or float depending on their habitat. When grown on land, plants can grow up to 3 feet tall, stems frequently fall over and root themselves where they touch moist soil. When grown in water, stems can reach up to 10 feet long. Persicaria amphibia produce both unisexual and bisexual flowers that are red to pink and grow in clusters at the apex of the plant. Flowers typically bloom for 2-3 months in late summer. Some indigenous people groups have used the young shoots as a vegetable, and have used the plant medicinally in the form of tea to treat mouth ulcers and upset stomachs. USDA hardiness zones 5 through 9.
Germination instructions coming soon…
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All packages will be shipped with basic customs information such as; HS codes, VAT numbers, and properly labeled contents. Unfortunately, The Garden of Set is unable to provide phytosanitary certificates for orders at this time. It is the buyer’s responsibility to know local laws regarding the import of plants, seeds, and plant products into their country. It is also up to the buyer to provide any other customs forms or information required to import plants into their country. If packages get stopped by customs, The Garden of Set will not be able to provide a refund for the purchase. Most of the time packages make it to their destinations just fine, this is for the small minority of packages that get stopped without having all the proper customs information required by the country of import. Purchase at your own discretion.