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Amaranth is a pseudocereal with potential health benefits. Amaranth has recently gained importance due to its high capacity to grow in adverse conditions. Details about the growth and development of amaranth is fundamental to its cultivation, but reports on the phenological growth stages, development, and the life cycle of amaranth are limited. Under normal conditions, amaranth plants are as high as 2.2 m, making their handling difficult. Thus, this study determined the phenological growth stages and life cycle of amaranth in restricted spaces. Amaranthus cruentus, Amaranthus hybridus, and Amaranthus hypochondriacus plants were cultivated in restricted spaces. The physiological and qualitative features as number of leaves, length of plants and leaves, panicle color, were used to determine the different phenological growth stages and life cycle of amaranth plants. The phenological growth stages were …