How to Grow Green Amaranth (Rau Dền) from Seed and Harvest Tender Leaves

Quick answer: Green amaranth, often called rau dền xanh, is a warm-season leafy vegetable. This guide focuses on Amaranthus viridis, not ornamental globe amaranth (Gomphrena globosa), red-leaf amaranth or every grain amaranth sold under the same common name. Sow fine seeds shallowly after frost danger passes, keep the bed evenly moist, thin young plants, then pick tender leaves and shoots while the crop is growing strongly. Let the plant mature for seeds only if seed collection is intentional and locally appropriate.

Frequently Asked Questions

Is amaranth hard to grow from seed?

Edible leafy amaranth is generally straightforward in warm weather, but tiny seed, overly deep sowing, heavy watering, cold soil and weeds can interfere with establishment. Start with a small labeled trial and keep conditions even.

Can amaranth be grown in pots?

Yes. Grow edible leafy amaranth in a pot that drains freely, has adequate growing mix and receives generous light. Thin crowded seedlings and monitor moisture in hot weather. Container growth does not prove the seed lot's species or leaf quality.

Do you need to soak amaranth seeds?

A pre-soak is not necessary for ordinary shallow sowing of the tiny leafy amaranth seeds described by Texas A&M and the World Vegetable Center. Use packet-specific guidance and avoid leaving seeds immersed long enough to rot.

Is amaranth edible?

Yes, properly identified food-grown leafy amaranths are edible, but species and plant part matter. This article covers tender leaves and shoots of Amaranthus viridis, not ornamental species, unidentified roadside weeds or retail planting seeds intended for eating.

What parts of amaranth are edible?

For this leafy vegetable crop, the young leaves and tender stems are the main culinary harvest. Some other amaranth species are grown for grain, but a generic common name does not make this retail planting seed a food grain.

Before You Sow: Identify the Right Edible Green

Amaranthus viridis is an accepted species according to Royal Botanic Gardens, Kew. The culinary names rau dền, Chinese spinach, callaloo and pigweed can refer to several different Amaranthus species. Confirm the name and growing purpose on the real seed packet. Seeds sold for planting are not ready-to-eat grain, microgreens or food-grade sprouts. The Rike's particular seed lot has no independently verified cultivar, seed count or germination test.

When and Where to Grow Rau Dền

Vegetable amaranths favor warm temperatures, sunshine and fertile, well-drained soil. Start outdoors only after the danger of frost has passed. Raised beds, weed-free garden rows and containers with drainage work well for leafy greens when the plants have enough space and moisture. In hot, windy balcony conditions, pots may dry more quickly than in-ground beds. Avoid prolonged saturation and excessive dryness that can reduce leaf quality.

How to Sow Green Amaranth Seeds

1. Prepare the bed or container: Loosen the surface, remove weeds and use a fine, well-drained planting medium. An inch or two of compost may improve poor garden soil where appropriate.
2. Plant shallowly: Texas A&M AgriLife Extension recommends covering edible amaranth seeds 1/2 inch or less. A World Vegetable Center guide uses around 0.5–1 cm for leafy amaranth. Follow cultivar-specific packet instructions if supported.
3. Water gently: Fine seeds can wash away. Keep the surface lightly and evenly moist as seedlings emerge, not swampy. Do not infer that every seed must be soaked or needs a fixed number of days to sprout.
4. Thin early: Texas A&M gives roughly 6 inches between mature leafy plants as a useful reference. Thin according to the crop size you want and leave the healthiest seedlings.
5. Maintain steady growth: Check root-zone moisture in hot weather and avoid excessive fertilizer. Use a soil test or labeled vegetable fertilizer instructions rather than assuming one feed schedule fits every plot.

Harvest Tender Amaranth Greens

Texas A&M describes tender edible amaranth leaf harvest around five to six weeks after sowing as a general field reference. Depending on crop type, moisture and conditions, a small-leaf harvest may be possible earlier. The World Vegetable Center describes both whole-plant harvests and repeated cutting of appropriate amaranth crops. Harvest the young leaves and tender shoot tips with clean scissors, leaving foliage and growth points if you want to test regrowth. Repeated cutting is not guaranteed for this unidentified seed lot. Leaf quality decreases as plants age and flower.

Rinse harvested food-grown greens and cook them as a leafy vegetable for stir-fries, soups or other dishes. Harvest only plants you can correctly identify and that have not been treated with chemicals unsuitable for food crops. Leafy amaranth is not the same as ordinary spinach (Spinacia oleracea).

What About Growing in Pots?

A broad, stable pot with drainage and several inches of good growing mix can support leafy green amaranth. Sow thinly, thin early and watch the pot's weight and soil moisture in hot weather. The right container size depends on whether you want baby greens or larger leafy plants, so no universal pot volume or fixed daily watering amount is promised.

Prevent Volunteer Seedlings

Some amaranths can self-seed easily. Remove seedheads before they shed if you do not want volunteer plants, and check around paths, beds and containers the following season. Do not assume any local weed is a safe edible amaranth without identification.

Sources and Matching Seeds

• Texas A&M AgriLife: Amaranths (Chinese Spinach) — seed depth, spacing, warm growing conditions and young-leaf harvest.
• World Vegetable Center: Growing Amaranth — sowing and multiple harvest approaches across leafy amaranth types.
• Kew: Amaranthus viridis — botanical identification.

Looking for seeds? See The Rike's Green Amaranth Seeds — 2 packs × 2,000 as listed. The offered seed lot is sold for planting, not food or sprouts; physical pack count, cultivar and germination have not been independently verified.