Amaranth is an annual ornamental plant that has been grown for its edible grain-like seeds for millennia. Amaranth are characterized by large, broad leaves with prominent veining. Each plant produces a single flower at the end of the tall reddish stem. Colors are usually burgundy, red, pink, or salmon. Amaranth grows best in average, well-drained soil, so ensure your chosen site has good drainage and air circulation. It requires at least six hours of sunlight, acidic soil, and temperatures between 70 and 85 degrees Fahrenheit.
Growing my own food brings me immense joy and satisfaction. I love being able to nurture plants from seed to harvest. Amaranth has become one of my favorite plants to grow in pots. This versatile green can be grown easily at home with minimal effort.
In this comprehensive guide, I will share everything I’ve learned about successfully growing vibrant, healthy amaranth in containers.
Why Grow Amaranth?
Amaranth offers many benefits that make it the perfect plant for home gardeners like us
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Extremely nutritious – High in vitamins, minerals, protein and fiber. The leaves and seeds are edible.
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Beautiful ornamental value – The flowers are bright and the foliage has a lush, exotic look.
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Low maintenance – Does not require much care once established.
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Continuous harvests – You can keep plucking the leaves and allow it to regrow.
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Adaptable – Grows well in pots and small spaces.
Choosing the Right Container
Amaranth can grow over 6 feet tall when allowed to mature. But you can control its size by using containers.
For bushy amaranth greens, use at least a 12-inch wide pot. This will accommodate the root system and allow you to harvest multiple times.
I would recommend using plastic pots, fabric grow bags or recycled buckets/pails. Make sure the container has adequate drainage holes at the bottom.
Best Potting Mix for Amaranth
Creating the ideal potting mix provides proper drainage and nutrients for optimal growth.
Here is my homemade mix that has given great results:
- 1 part compost – Provides nutrients
- 1 part peat moss – Retains moisture
- 1 part perlite – Improves drainage
You can also purchase a commercial organic potting soil blend. Just avoid regular garden soil as it can get too compacted. The potting mix should be loose and fluffy.
How to Plant Amaranth Seeds
Amaranth can be grown from seed or transplants. I prefer sowing seeds directly in pots as it’s more convenient.
Here are the simple steps for planting amaranth seeds:
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Fill your container with moist potting mix, level and smooth the surface.
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Spread the tiny seeds evenly over the soil.
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Gently press them into the soil and cover lightly with 1/4 inch layer.
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Water thoroughly after sowing and keep the soil moist.
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Germination occurs within 5-7 days in warm weather.
Caring for Your Potted Amaranth Plant
Once your seeds have germinated, follow these tips to help your amaranth thrive:
Sunlight
Amaranth flourishes in full sun – at least 4-6 hours of direct sunlight daily is ideal. Partial shade is also fine during very hot afternoons.
Water
Establish a regular watering schedule based on your climate. The soil should be kept moist but not soaked. Wait until the top inch becomes dry before watering again.
Temperature
Amaranth prefers warm conditions around 70°F – 75°F. It can tolerate higher temperatures but may need some shade.
Fertilizer
Apply a balanced liquid fertilizer every 2-3 weeks during the growing season. This provides a nutritional boost to the fast growing plant.
Pruning & Thinning
To prevent overcrowding, pinch off the growing tips to encourage bushy growth. Thin seedlings to 6-12 inches apart.
Dealing With Pests and Diseases
Growing a healthy and robust amaranth plant will help prevent most pest and disease issues. But here are some organic remedies to tackle the most common problems:
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For aphids and mites – Use neem oil spray or insecticidal soap.
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For fungal issues – Treat with sulfur powder or copper fungicide spray.
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For wilting leaves – Check for root rot and improve drainage if needed.
When and How to Harvest Amaranth
One of the best things about amaranth is getting to enjoy fresh greens throughout summer.
Harvesting Leaves
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Start plucking leaves once they are at least 6 inches long.
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Use clean scissors to snip off leaves just above the node.
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Harvest from the outside, leaving the inner leaves to sustain the plant.
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Pick leaves as needed, allowing regrowth for multiple harvests.
Harvesting Seeds
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Allow plants to flower and seeds to mature before harvesting.
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Cut off entire seed heads and place upside down in paper bags.
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Seeds will drop to the bottom of the bag as they dry.
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Collect seeds and store in an airtight container.
With proper care, you can get up to 3-4 cuttings of amaranth leaves from each plant in one season. The abundant harvests make all the effort worthwhile!
Tips for Encouraging Regrowth
Here are some useful tips to promote continuous leaf regeneration after each harvest:
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Keep plants well watered and feed with compost or fertilizer. This fuels new growth.
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Prune selectively, leaving some leaves intact to nourish the plant.
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Ensure plants receive sufficient sunlight.
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Check for pests and diseases. Treat issues promptly to avoid stressing the plants.
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Avoid cutting off more than 50% of the foliage at one time.
Common Problems and Solutions
Even experienced gardeners encounter some challenges while growing amaranth. Here are solutions to the most common issues:
Leggy growth – This indicates insufficient light. Move plant to a sunnier location.
Wilting leaves – Check soil moisture and water if dry. Could indicate root damage.
Stunted growth – Apply balanced fertilizer and ensure adequate sunlight.
Seedlings drying out – Cover seeds with vermiculite after sowing to retain moisture.
Poor germination – Viability of seeds may be low. Obtain fresh seeds and proper sowing depth.
Pests – Treat aphids, mites etc. with organic pesticides like neem oil. Remove infested parts promptly.
Fungal diseases – Improve air circulation. Apply copper fungicide spray.
Amaranth Plant Care in Winter
As amaranth is a tropical plant, it cannot tolerate freezing temperatures below 50°F. Here are some overwintering options:
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Grow as an annual and allow it to self-seed for next year.
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Bring pots indoors before first frost. Provide adequate sunlight near a window.
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Take cuttings to propagate new plants indoors to transplant outside next spring.
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Harvest all leaves and seeds by end of season. Treat as an annual and start new plants next year.
Wrapping Up
I hope these tips will inspire you to try growing amaranth in containers this year. With its beautiful foliage, high yields and nutritional benefits, amaranth is a rewarding plant suited for spaces big and small. Just be sure to provide adequate sun, water and nutrition. Happy gardening!
Common Pests & Plant Diseases
Amaranth can fall prey to many of the same pests and diseases that affect other vegetables. Aphids and weevils are common. Insecticidal soaps are a good remedy for the former and floating row covers protect the plants from the latter. Avoid using commercial pesticides with a “wait to pick” or any other type of warning regarding consumption. Many of these types of pesticides are broad-spectrum, designed to eliminate multiple insects, and might contain ingredients not meant to be ingested by humans.
Root rot can be a problem in wet, dense soil or in periods where rainfalls are frequent and copious. Once root rot occurs, the plant must be removed. Your best defense against root rot is maintaining well-drained soil and not overwatering the plant.
What Do Amaranth Flowers Look and Smell Like?
Amaranth flowers have showy, drooping, fuzzy red clusters of flowers with a mild, non-floral grassy scent.
Everything you need to know about Amaranth from growing and harvesting to eating and storing
FAQ
Can amaranth be grown in containers?
How often do you water amaranth?
Does amaranth come back every year?
How many amaranth per pot?
When is amaranth planted?
A warm-season plant, amaranth is planted after final spring frosts. Learn how to plant, grow, and care for amaranth. Amaranth plants are members of the genus Amaranthus, of which there are about 75 species. Amaranths are often grown for ornamental purposes, and some varieties make stunning additions to cut flower arrangements or fall wreaths.
Can amaranth be transplanted?
Amaranth grows easily in many soil types but thrives in well-drained, fertile, loamy soil. Plant directly into the ground in rows, raised beds, or large containers (10-18 inches in diameter) that receive lots of sunlight. For plants sown inside, transplant once your last frost date has passed. Be careful to keep the roots intact as you transplant.
Why does my amaranth grow small?
If your crops are in the shade or densely planted, you will notice that your amaranth will be smaller. Adjust the available sunlight if other plants are shading your amaranth or thin out the plants to 18 inches apart to provide proper air circulation. Temperature may also be a factor in growing issues.
How do you care for Amaranth?
Here are the main care requirements for growing amaranth: Grows best in any average well-drained acidic soil with good air circulation. Thrives in temperatures between 70 and 85 degrees Fahrenheit; needs at least six hours of direct sunlight.