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Mustard plant
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<p>The mustard plant is any one of several plant species in the genera <i><a href="/facts/Brassica/x0L32VGA">Brassica</a></i>, <i><a href="/facts/Rhamphospermum/mrlFH7cK">Rhamphospermum</a></i> and <i><a href="/facts/Sinapis/g24IkLPa">Sinapis</a></i> in the family <a href="/facts/Brassicaceae/xMjNIBzU">Brassicaceae</a> (the mustard family). <a href="/facts/Mustard_seed/I0MXVYXo">Mustard seed</a> is used as a <a href="/facts/Spice/mIMfxvm7">spice</a>. Grinding and mixing the seeds with water, vinegar, or other liquids creates the yellow condiment known as <a href="/facts/Mustard_(condiment)/BpXFTgEX">prepared mustard</a>. The seeds can also be pressed to make <a href="/facts/Mustard_oil/Y6TM6QF0">mustard oil</a>, and the edible leaves can be eaten as <a href="/facts/Brassica_juncea/24vqrXS1">mustard greens</a>. Many vegetables are cultivated varieties of mustard plants; domestication may have begun 6,000 years ago. </p>