How to GrowAmaranth From Seed. Collect seeds in the fall and replant them the following spring. When sowing amaranth outdoors, space seeds about 4 inches apart after the soil has... Growingamaranth is possible all year round in the tropics. That's one of the reasons it is an essential and ubiquitous plant in my permaculture garden. Amaranthgrows slowly for the first month and can easily be outcompeted by weeds (including the wild, noxious amaranths). Amaranth loves heat. They do not like cold temperatures and can’t handle frost, so don’t plant them too early. Don’t worry - they grow quickly when the soil warms up. Amaranthgrows best in moist, well-drained soil, but it will tolerate poor soil quality and drought. Amaranth thrives in full sun and will grow to be 5 to 8 feet tall in ideal conditions. Whether growingamaranth from seed for its nutritious leaves or its high-protein, gluten-free seeds, it is easy to grow in warm soil with lots of sunlight. In kitchen gardens, amaranth greens can be grown throughout the year in pots and other containers, provided that sufficient care is provided for the plants from frost protection during winters. Growingamaranth plants is both rewarding and straightforward, thanks to their resilience. These plants thrive in warm climates and require well-drained soil rich in nutrients. Amaranth (Amaranthus spp.) is grown worldwide for its edible leaves and seed. In the UK, it's mostly grown for its tasty leaves, which are a bit like spinach. Growing TipsAmaranthgrows best in warm temperatures, so ensure to plant after the danger of frost has passed.Thin seedlings early to prevent overcrowding and ensure strong growth. Most true grains contain only small amounts of lysine, and corn has none. Amaranth has been grown for thousands of years in Mexico, Central America, India, Africa, and China. Amaranth is closely related to the weed known as red-rooted pigweed, so it can be difficult to tell the two plants apart. Amaranthgrows to 4 to 6 feet (1.2 – 2 m) tall... Cut green stems as desired. Harvest seeds by placing flowers in a paper bag and shaking. How to Grow & Harvest Amaranth. Growingamaranth plant with a bee on it. As a food, the seeds make a delicious grain substitute that is gluten-free and packed with protein. The leaves make a nutty, sweet alternative to kale.