Here are some characteristics of the Amaranthus "Arun" red variety: 

• Color: The leaves are red
• Germination rate: High
• Blooming period: Autumn
• Sunlight exposure: Full sun

Amaranth plants are typically annuals or short-lived perennials. They have the following characteristics: 

• Leaves: Broad, egg-shaped or rhombic, with prominent veins. The leaves can be green or red in color and may be smooth or covered in tiny hairs.
• Stems: Often reddish in color and sometimes armed with spines.
• Flowers: Single flowers on terminal spikes that are typically red to purple in color.
• Fruit: Dry, splitting open when ripe.
• Height: Can grow longitudinally from 1 to 2.5 meters (3 to 8 feet) tall.