Here is the Water Pepper, Persicaria hydropiper, formerly polygonum hydropiper. It is also know as marshpepper knotweed, arse smart or tade and are annual plants. They are native and naturalized to Australia, New Zealand, temperate Asia, Europe and North America. It is a erect stem growing to a height of 20 to 70 cm (8 to 28 in). The leaves are alternate and almost stalkless. The leaf blades are narrowly ovate and have entire margins fringed by very short hairs. They are tapering with a blunt apex. Each leaf base has stipules which are fused into a stem-enclosing sheath that is loose and fringed at the upper end. The inflorescence is a nodding spike. The perianth of each tiny flower consists of four or five segments, united near its green base and white or pink at the edges. There are six stamens, three fused carpels and three styles. The fruit is a dark brown oval, flattened nut. Water pepper is eaten in Japan, where it is known as tade (蓼), or more specifically, yanagi tade (柳蓼). The leaves are used as a vegetable, but only from the cultivar, not the wild type which has a far more pungent taste. The herb is usually sold in markets as seedlings. Young red sprouts are known as beni-tade (紅蓼), and are used to garnish sashimi, tempura, and sushi. It is popular for summer cooking. Open pollinated and collected in the wild, mid to late season 60 to 95 days.

PLEASE NOTE: Seeds are almost microscopic, so seed count is approximate and may be more or less then 50

Water Pepper, Persicaria hydropiper

Name: Water Pepper, Persicaria hydropiper
Brand: HRSeeds
SKU: 4516-50

SKU: 4516-50

$1.50

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50 seeds
1) Prepare for planting. Sprout seeds in small containers, preferably 4" or smaller. In-ground germination is not recommended. Use a standard potting mix that is well drained. Start seeds in containers approximately 8 weeks prior to the planned set-out date. Plants should ultimately be transplanted to the garden 1-2 weeks after the expected date of last frost.
2) Plant seeds. Plant seeds 1/4" deep in the soil. Cover with soil and water carefully. Overwatering can cause fungal growth which leads to seed rot. Excess water can also bury seeds deep in the soil where they will not be able break the surface. Water when the soil surface just begins to dry. Multiple seeds can be planted in a single starter container, but should be thinned once seedlings appear so only a single plant remains. Seeds do not require light for germination but some light source should be provided for seedlings once they emerge from the soil.
3) Germination. Soil should be kept consistently warm, from 70-85F. Cool soils, below about 60-65F, even just at night, will significantly delay or inhibit germination. Hot soils above 95F will also inhibit germination.
4) Care of seedlings. Once a few true leaves have developed, seedlings should be slowly moved outside (if sprouted indoors) to ambient light. Care should be taken not to expose seedlings to direct, scorching sun so plants may need to be hardened off via slow sun exposure. Hardening off can be done using a shaded or filtered light location, as well as protection from strong winds, rain or low humidity. Hardening off time varies, but can take 5-10 days.
5) Planting out. Plant in the ground once danger of frost has past and daytime temperatures consistently reach 65F. Plants can be spaced as close as 24" apart. Germination time: 1-3 weeks under ideal conditions.

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Water Pepper, Persicaria hydropiper

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