Guide on How to Grow Amaranth Plant

Amaranth, often called the “forgotten grain,” is making a vibrant comeback in gardens and kitchens worldwide.

Known by names like Pigweed, Love-Lies-Bleeding, and Redroot, this fast-growing annual plant reaches 2 to 8 feet in height.

Its broad leaves, in shades of green, red, and purple, and its thick, sturdy stems, often tinged with red or purple, add to its appeal.

Amaranth blooms in mid to late summer, producing striking tassel-like flowers in red, pink, gold, and green.

Amaranth is not only ornamental but also nutritious. It contains vitamins A, C, and E, as well as calcium, iron, magnesium, and potassium.

Amaranth is a complete protein source, making it ideal for vegetarians and vegans.

The seeds are gluten-free and high in fiber, suitable for use as whole grains or ground into flour for baking. The leaves can be used like spinach in salads, soups, or smoothies.

Amaranth seed oil is rich in unsaturated fatty acids and antioxidants, which help protect against oxidative stress and reduce inflammation.

The plant supports bone health, boosts the immune system, and promotes healthy skin and hair.

Whether you’re an experienced gardener or a novice, growing amaranth can be rewarding. Here’s a step-by-step guide to cultivating this versatile plant.

 

Propagation

From Seeds

Prepare well-drained, nutrient-rich soil with a pH of 6.0 to 7.5. Sow seeds after the last frost when the soil is warm (18-25°C or 65-77°F), at a depth of about ¼ inch, spaced 10-12 inches apart.

Water lightly after sowing. Seeds germinate within 7-14 days.

 

Stem Cuttings

Prepare a pot with moist potting soil, sterilized pruners, rooting hormone, and a transparent plastic film.

Select a healthy stem, cut below a node, remove leaves except for two or three at the top, and dip the cut end into rooting hormone powder. New plants appear after two weeks.

 

Division

Dig up an older plant and separate the roots into smaller sections, ensuring each section has at least one stem and several roots.

Replant each section in a new pot or garden location with bright, indirect light.

 

Growing Amaranth Plant

Preparation

Choose the right variety:

• Amaranthus caudatus: Ornamental flowers.
• Amaranthus cruentus: Grain production.
• Amaranthus hypochondriacus: Leaves and seeds.
• Amaranthus retroflexus: Edible but often considered a weed.

Opt for high-quality seeds, soak them in water for 24 hours before planting.

Select a sunny location with well-drained, nutrient-rich soil with a neutral pH. Till the soil to a depth of 12 inches, incorporating compost or well-rotted manure.

 

Starting Seeds Indoors

Use seed trays or small pots with drainage holes filled with a seed-starting mix. Sow seeds 4-6 weeks before the last frost, 1/4 inch deep, spacing them 2-3 inches apart.

Place containers in a sunny window or under grow lights, maintaining a temperature of 70-75°F. Thin seedlings to 10-12 inches apart once they are 4-6 inches tall.

Gradually expose seedlings to outdoor conditions for 7-10 days before transplanting.

 

Transplanting Seedlings

Choose a sunny site, ensuring it receives at least 6-8 hours of sunlight daily. Dig holes 10-12 inches apart in rows 18-24 inches apart.

Place each seedling in a hole, firm the soil around the roots, and water well.

Tips: Grow amaranth with beans, corn, and marigolds to enhance productivity and deter pests.

 

Care for Amaranth Plant

Here are main requirements to take care of amaranth plants:

• Ensure the plants receive at least 6-8 hours of direct sunlight daily.
• Prefers rich soil with good drainage.
• Maintain a temperature range of 70-85°F (21-29°C).
• Remove weeds regularly.
• Use mulch to retain soil moisture and suppress weeds.
• Thin seedlings to 10-12 inches apart to ensure good air circulation.

 

Light

Amaranth thrives in full sun, requiring at least six hours of direct sunlight daily. In hotter climates, some afternoon shade can prevent leaf scorch.

 

Soil

Amaranth prefers well-drained, nutrient-rich soil with a pH of 6.0 to 7.5. Enrich the soil with organic matter like compost or aged manure.

 

Water

Amaranth is drought-tolerant, needing regular watering only during early growth stages. Keep the soil lightly moist after sowing, then water once or twice a week as plants grow.

Focus water at the base in the early morning or late afternoon, avoiding the flowers and grain.

 

Fertilizer

Amaranth plants typically need fertilization only in poor growing conditions. If necessary, use a balanced, slow-release fertilizer (10-10-10) at planting and again midway through the growing season.

 

Mulch

Apply a 2-3 inch layer of organic mulch around amaranth plants to retain soil moisture, suppress weeds, and regulate soil temperature.

 

Pruning

To encourage bushier growth, trim the center stem when plants reach knee height and pinch back overgrown sections. Remove spent blooms to ensure continuous flowering.

 

Pests and Diseases

Amaranth faces several pests like aphids, leaf miners, flea beetles, cutworms, and spider mites.

These pests cause damage such as white trails, yellow spots, holes in leaves, and webbing. Control them using insecticidal soap or neem oil.

Amaranth is also susceptible to diseases like downy mildew, root rot, and powdery mildew.

Downy mildew causes yellow spots and gray mold, preventable with good air circulation and avoiding overhead watering.

Root rot, caused by waterlogged soil, leads to wilting; avoid it by improving drainage.

Powdery mildew appears as a white coating on leaves and can be managed with proper plant spacing and fungicides.

Common Problems

Poor Germination

Amaranth seeds sometimes face poor germination due to improper soil temperature, poor seed quality, or inconsistent watering.

To enhance germination rates, ensure the soil temperature is maintained between 70-75°F (21-24°C), use high-quality seeds, and keep the soil consistently moist.

 

Leggy Seedlings

Leggy seedlings can occur from insufficient light or overcrowding.

To prevent this, provide at least 6-8 hours of direct sunlight daily and thin seedlings to the correct spacing.

 

Yellowing Leaves

Yellowing leaves are often a sign of overwatering, nutrient deficiency, or poor drainage.

Water the plants moderately, ensure the soil is well-drained, and apply a balanced fertilizer to maintain healthy foliage.

 

Bird Destruction

Birds can be a problem as they are attracted to amaranth seeds and may damage flowers.

Use netting to protect the plants, although this may also restrict pollinators from reaching the flowers.

 

Harvest

Harvesting Flowers

Enjoy the blooms as cut flowers, enhancing the beauty of your home.

 

Harvesting Leaves

Begin harvesting when the plant is about 8-12 inches tall. Use scissors to snip off the leaves from the outer part of the plant, allowing the central leaves to continue growing.

Avoid removing more than one-third of the plant’s leaves at a time to ensure it remains healthy.

 

Harvesting Seeds

Seeds are ready for harvest 3-4 months after planting. Look for flower heads that have turned brown and dry.

Cut the entire flower head off the plant and place it in a paper bag or on a drying rack in a cool, dry place for several days to ensure they are completely dry.

 

Preservation

Fresh Storage

Washing them thoroughly to remove any dirt or debris. Place the leaves in a plastic storage bag and store them in the refrigerator.

This method keeps the leaves fresh for a few days.

 

Freezing

Wash and parboil the leaves by boiling them for a few minutes and then draining. Allow the leaves to cool completely before packing them in airtight freezer bags or containers.

Store the packaged leaves in the freezer, where they can be kept for an extended period.

 

Storing Seeds

When amaranth seeds are dry, thresh them by gently rubbing the flower heads between your hands or using a sieve to separate the seeds from the chaff.

Winnow the seeds by gently blowing away the lighter chaff while letting the heavier seeds fall into a container.

Alternatively, use a fine mesh screen to sift out the smaller debris. This ensures that you have clean seeds ready for future planting or culinary use.

Enjoying flowers, leaves and seeds of amaranth plants that you DIY grow is an interesting experience. Follow our guide and wait for bountiful crops!