Watercress is a spicy, water-borne plant of the same family as mustard. It is prized as a food because of its rarity and short shelf life. Some things to keep in mind when it comes to hydroponics: * Watercress favors a slightly alkaline environment, so you may not get optimal performance in a system with other hydroponic produce at a normal pH of 5.8-6.5. * Watercress does not tolerate stagnant water, it needs to be moving and aerated.
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