Growing Tricolor Amaranthus Garden Seeds
- Taxonomy: Amaranthus tricolor
- Other Names: Joseph’s Coat, Fountain Plant, Summer Poinsettia
- Seed Type: Annual
- Sow Indoors or Outdoors: Tricolor Amaranthus is popularly sown as a decorative plant directly after the final frost but, for earliest color, begin seeds indoors 6 – 8 weeks prior and transplant to a sunny place either indoors or out. Amaranthus seeds will take 14 – 21 days to germinate with full lighting and young plants may need staking.
- Days to Plant Maturity: 70 – 77 days
- Hardiness Zone: 3 – 11
- Seed Planting Depth: Plant 4 – 5 seeds ¼” deep
- Plant Spacing: 18 – 24”
- Growth Habit: 36 – 48” tall bushy upright with an 18 – 24” spread of “poinsettia-like” tricolored leaves
- Soil Preference: Average, evenly moist, well-drained
- Light Preference: Full sun
- Diseases/Pests/Troubleshooting: Tricolor Amaranthus is susceptible to yellow asters, root rot, fungal leaf spots, and powdery mildew if grown in overly saturated and poorly drained soil. Amaranthus has no serious pests, but monitor regularly for aphids.
- Color: Bushy red, yellow, and green tricolored leaves
- Flavor: Earthy, nutty, and spinach-like
Although Amaranthus tricolor is technically native to the tropics of South America, the plant has since been naturalized throughout most of the world’s tropics and has become a favorite in many different countries’ diets. Amaranthus is also known as “Edible Amaranthus” and grown as a vegetable in Korea, India, Bangladesh, and the Caribbean. Amaranthus is also celebrated and grown worldwide for being able to convert CO2 at a much higher rate of efficiency that many other plants. Edible Amaranthus decorative house plant seeds.