Polygonum hydropiper var fastigiastum
Water-pepper, water pepper or marshpepper knotweed is a plant of the family Polygonaceae. It grows in damp places and shallow water. It is a widespread plant, found in Australia, New Zealand, temperate Asia, Europe, and North America
This Japanese herb can be harvested as a seedling or allowed to mature for its flower spikes. Sow seeds in a damp location. It has a slightly bitter taste and is served with sashimi. Mostly grown for its red, peppery seedlings, it also may be used in salads
Cultivation: Benitade seed has a weak and slow germination. It is important that the seed is kept moist until it has germinated. Soak seeds in water for 24 hours. Then wrap the seeds in cloth and pre-chill refrigerate between 0C and 10C (32°F-50°F, 41°F is best) for at least 7 days.
Most vegetables leaves or sprouts having red or purple color is called “anthocyan” which is generally developed by lower temperature. Growing temperatures 50-60°F should be adequate to develop “anthocyan” after the seeds have germinated. We cannot tell exactly how long exposure should be under low temperatures. The grower should trial different methods and observe how the microgreen reacts.