How to grow amaranth (chaulai) at home in India

If you want one leafy green that grows fast, shrugs off the Indian summer, and keeps giving from a single sowing, grow amaranth. Known as chaulai in the north, laal saag when it's the red type, thotakura in Telugu, and keerai in Tamil, it germinates in days, is ready to eat in a few weeks, and regrows after you cut it. Where spinach and methi sulk in the heat, amaranth thrives — which makes it one of the best crops for a terrace during the months when little else wants to grow.

This guide covers both the leafy vegetable amaranth and the ornamental-looking red types, how to sow the tiny seed without wasting half of it, the shallow containers it prefers, and the cut-and-come-again harvesting that stretches one sowing into weeks of saag. It's a genuinely beginner-friendly crop — hard to fail with — so it's a good first thing to grow on a new terrace.

When to plant amaranth in India

Amaranth is a warm-season crop that loves heat, so its window is wide. The main sowing season is February through September across most of India — right through the summer and monsoon when other greens struggle. In the hot plains you can keep sowing every 2–3 weeks through this whole stretch for a continuous supply.

It slows down in real cold: December–January in North India is too chilly and growth crawls, though a sunny balcony can still manage a small crop. In the frost-free south and coastal areas, amaranth grows practically year-round. Because it's so fast — leaves in as little as 25–30 days — you don't need to time it precisely. Sow whenever you have a warm month ahead.

Do note amaranth bolts (runs to flower) quickly in high heat and long days. That's fine if you keep cutting it young; if you let it sit, it turns tough and seedy.

Red or green? Choosing a type

Both are the same crop with the same care — the choice is about looks, taste and use:

Green amaranth (green chaulai / thotakura): milder, tender, the everyday saag green. Common cultivars include Pusa Kiran and CO-1/CO-2 selections. Best all-rounder for cooking dal-style saag and stir-fries.
Red amaranth (laal saag / laal chaulai): the striking maroon-red leaf. It bleeds a purple-red colour when cooked, looks beautiful on a terrace, and is slightly earthier in taste. Arka Suguna and various "laal saag" selections are widely sold.

For eating, green types give more tender leaf and a milder flavour. For colour and a bit of both, grow red. Many people sow a mixed packet and get both. There's no wrong answer — grow whichever your family will actually eat.

Container size and soil mix

Amaranth is shallow-rooted, so you don't need depth — you need surface area. A wide, shallow container 15–20 cm deep is ideal: a rectangular grow bag, a wide pot, a cut-down paint bucket, or an old plastic crate lined and drilled for drainage. This is a great crop for kabaadi-style upcycled containers because it asks so little.

Because you grow it thick and cut it young, more width means more saag per sowing. A window-box roughly 60 cm long can feed a couple of cuttings for a small family.

For soil, amaranth isn't fussy but rewards a fertile, moisture-holding mix:

40% garden soil or loam
30% compost or vermicompost
30% cocopeat (holds moisture in summer heat)
a handful of neem cake

Good drainage still matters — the mix should hold moisture but not stay swampy. For a reliable base you can reuse across greens, see our potting mix recipe for terraces.

Step by step: sowing to first cut

Sow (Feb–Sep): Amaranth seed is dust-fine. Mix a pinch of seed with a spoonful of dry sand or soil so you can scatter it thinly, then broadcast over moist mix. Cover with barely 2–3 mm of soil — the seed is tiny and won't push up from deep.
Water gently: Use a fine spray or mug so you don't wash the seed away. Keep the surface moist.
Germinate (day 3–7): Sprouts appear fast in warm weather. You'll likely have a dense green fuzz.
Thin (week 2): Thin crowded seedlings to roughly 4–8 cm apart. Don't throw the thinnings — the baby leaves are edible microgreens.
Grow (week 2–4): Keep it moist and in good light. Plants push up quickly.
First harvest (day 25–35): Once plants are 15–20 cm tall, start cutting.

Watering and feeding

Keep the mix consistently moist, especially in peak summer when a shallow container can dry out by afternoon. In April–May terrace heat, that often means watering once in the morning and checking again in the evening. Amaranth handles heat well but not bone-dry soil — leaves wilt and toughen when stressed. During monsoon, ease off and make sure water drains freely so seedlings don't damp off.

For feeding, a fertile starting mix carries the first cutting. After each harvest, give a light feed to power the regrowth — a diluted vermicompost tea, cow-dung tea, or a spoonful of vermicompost worked into the surface every 10–14 days. Amaranth is a leaf crop, so a little extra nitrogen from compost keeps the flush green and tender. See organic fertiliser for leafy greens for options you can make at home.

Pests and problems specific to amaranth

Amaranth is tough, but a few things show up:

Leaf webber / leaf-rolling caterpillars: small caterpillars that web leaves together and chew inside. Pick off the rolled leaves; a neem oil spray (5 ml/litre) at dusk helps for repeat attacks.
Leaf miners: squiggly pale trails inside the leaf. Remove badly mined leaves; they're mostly cosmetic on a fast crop you cut young anyway.
Aphids: cluster on tender tips, especially before rain. Spray off with water or a mild neem solution.
Damping off: in wet monsoon conditions, dense seedlings flop and rot at the base. Sow thinner, improve drainage, and don't overwater young seedlings.
Bolting: not a pest, but in high heat plants shoot up a flower spike fast. Harvest young and keep cutting to delay it; once it's flowering hard, the leaves toughen.

Seeing spots, trails or curling you can't identify? Use our plant diagnosis tool for a quick read.

Harvesting — cut and come again

This is where amaranth earns its keep. You have two ways to harvest:

Whole-plant pull: yank the young plant, root and all, at 25–35 days. Simple, but it's one and done.
Cut-and-come-again (better): with scissors, cut the plant about 5–8 cm above the soil, leaving the base and lower leaf nodes intact. In warm weather it re-sprouts and gives you a second cut in another 2–3 weeks, and often a third. Snipping just the top tips also works and keeps the plant bushy.

For the longest supply, cut-and-come-again beats pulling. Harvest in the cool of the morning when leaves are crisp, and use them quickly — amaranth wilts fast once cut. Always cut before or just as flower spikes form; leaf quality drops once the plant commits to seeding.

Tip: if a few plants do run to seed, let one dry fully on the plant and collect the seed. It's the same tiny seed you sowed, and one flower head gives you enough for several future sowings — free saag on repeat.

Yields to expect

A single window-box (about 60 cm) sown thickly will give a family several good bunches of saag from the first cut, and cut-and-come-again stretches that to two or three flushes over roughly two months before the plants tire and bolt. Because it's so fast and cheap — a seed packet is often ₹20–₹50 and lasts many sowings — the smart move is staggered sowing: start a new container every 2–3 weeks so you always have young, tender greens coming on.

Few crops give this much return for this little effort. For a terrace in the hot months, amaranth is close to foolproof.

FAQ

Q: Is red or green amaranth better to grow?

A: They grow identically — the difference is use. Green chaulai is milder and more tender, the everyday cooking saag. Red laal saag is earthier, colours the dish purple-red, and looks striking on a terrace. Green is the better all-round eating green; grow red for colour, or sow a mix and get both.

Q: How fast is amaranth ready to harvest?

A: Very fast — you can start cutting leaves about 25–35 days after sowing, once plants are 15–20 cm tall. Thinnings pulled at two weeks are edible as microgreens even sooner. It's one of the quickest greens you can grow on a terrace.

Q: Can I keep harvesting from the same plants?

A: Yes. Cut the plant 5–8 cm above the soil with scissors instead of pulling it, and it re-sprouts for a second and often third harvest in warm weather. This cut-and-come-again method gives far more saag from one sowing than pulling whole plants.

Q: Why is my amaranth flowering and turning tough?

A: That's bolting — in high heat and long summer days amaranth runs to seed quickly, and the leaves toughen once it does. Harvest young and keep cutting to delay flowering. If it has bolted hard, collect the seed for your next sowing and start fresh.

Q: Does amaranth really grow through the Indian summer?

A: Yes — heat is its strength. It thrives from February through September, right through summer and monsoon, when spinach and methi struggle. Just keep the shallow container consistently moist, since it can dry out fast in peak April–May terrace heat.

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