The short version.

• India is the world's largest exporter of coco peat — coconut-husk pith, a byproduct of the coir industry — shipping over 52,000 consignments a year, mostly to the United States, China, and South Korea. Coir and coir-product exports overall hit $455 million in FY25 and were already up 62.9% year-on-year in the first four months of FY26. Coir pith alone (the coco-peat category) is roughly 60% of that export value.
• Coco peat is also one of the most effective substrates for hydroponic and vertical farming: high water retention, natural aeration that prevents root disease, gradual nutrient release, and a renewable origin that would otherwise go to waste. It is the reason a coconut husk from Pollachi, Tamil Nadu can end up growing lettuce in a Singapore tower or tomatoes in a Dutch greenhouse.
• Meanwhile, Kashmir's saffron harvest — India's own highest-value crop, retailing at ₹3–6 lakh per kilogram — has collapsed: government figures cited by different outlets range from 8 tonnes (FY2010-11) down to 2.6 tonnes (FY2023-24) on one accounting, or roughly 16 tonnes (1996) down to 5–6 tonnes "in recent years" on another, and saffron-growing land itself has shrunk from 5,707 hectares in the late 1990s to 3,665 hectares in 2025 — a decline driven by climate change, urbanisation, and, per one Kashmir-based agronomist, competition from cheaper Iranian saffron, not any failure of demand or price for the genuine article.
• A mix of NABARD-funded Kashmir farmers and independent private entrepreneurs elsewhere in India — not any single government mission — are the ones proving saffron can be grown indoors using aeroponic and coco-peat-adjacent substrate systems; named, sourced cases include growers in Pampore and Budgam (Kashmir), Hisar (Haryana), and Wayanad (Kerala). CSIR-IIIM's own institutional saffron programme, by contrast, is explicitly confined to non-traditional areas within Jammu & Kashmir itself, not a national technology-transfer effort.
• India's vertical-farming market is real but its size is genuinely disputed: different research firms put it anywhere from $62 million to $790 million for overlapping base years — a sign these are modelled estimates with different scope assumptions, not measured figures, and should be read as a rough sense of direction rather than a specific number.

India's coco peat machine, in the government's own numbers

Coco peat — the spongy pith left over after coconut fibre is extracted from the husk — used to be a waste product India burned or dumped near processing units. It is now one of the country's more reliable small export success stories. Coir Board data puts overall coir and coir-manufactured-product exports at $455 million in FY25, up from $360 million in FY24, on volumes of 13,42,843 tonnes shipped to 121 countries. Coir pith — the coco-peat category specifically — carried 59.6% of that export value in FY25, ahead of coir fibre (12.1%) and tufted mats (16.7%). The momentum has continued into FY26: exports for April–July 2025 were $209 million, against $129 million in the same four months a year earlier, a 62.9% year-on-year jump. India is described as the world's largest coco peat exporter, moving over 52,987 shipments a year, with the United States, South Korea, and China as the leading destinations (China alone took roughly 23% of FY26's export value in that window). Production is concentrated in Pollachi, Tamil Nadu, with Karnataka, Maharashtra, Andhra Pradesh, and Kerala as the other significant coco-peat-producing states.

Why a coconut husk is a vertical farm's favourite substrate

Coco peat's appeal to controlled-environment agriculture is not marketing — it is agronomy. It holds water efficiently and releases it gradually, which matters enormously in a hydroponic or aeroponic system where root zones can otherwise dry out or waterlog within hours. Its natural fibrous structure gives it strong aeration, reducing the root-rot risk that plagues denser soil-based media. It holds onto nutrients and releases them progressively rather than flushing away, improving uptake efficiency in systems that dose nutrients through recirculating water. And unlike peat moss — harvested from slow-forming, non-renewable bogs, mostly in the Baltic states and Canada — coco peat is a byproduct of an existing agricultural industry that would otherwise discard it. The global coco-peat market itself was valued at $3.89 billion in 2023, with third-party projections putting it near $5.26 billion by 2030, driven substantially by exactly this substitution: horticulture and controlled-environment growers moving away from peat moss toward coco-based media.

The crop that makes the case: Kashmir's saffron, in crisis

Saffron is the sharpest possible illustration of what a coco-peat-fed vertical farming sector could be worth to an Indian farmer, because it is already, by a wide margin, India's most valuable agricultural crop by weight — retailing at ₹3 lakh to ₹6 lakh per kilogram. Almost all of it has historically come from a narrow band of karewa soils around Pampore in Jammu & Kashmir, which carries a Geographical Indication tag specifically to stop saffron grown or processed outside the Valley from being sold under the Kashmiri name. That geography is now the crop's biggest vulnerability. Kashmir's saffron production has fallen from 8 tonnes in FY2010-11 to 2.6 tonnes in FY2023-24 on one accounting — a 68% decline over roughly two decades — and the 2025 season was worse still: fields that historically yielded 3.5 to 4 kilograms per hectare produced barely 1.5 kilograms per hectare. A separate, more recent Frontline (The Hindu) photo-essay reporting from Pampore in January 2026 cites a different official-data series: saffron production falling from roughly 16 tonnes in 1996 to five to six tonnes "in recent years," with the underlying saffron-growing land itself shrinking from 5,707 hectares in the late 1990s to 3,665 hectares in 2025. The two tonnage series don't reconcile cleanly — this piece is treating that as a real discrepancy between sources rather than picking one, since the land-area collapse (a genuinely new data point, not previously cited above) points the same direction regardless of which tonnage number is used. The primary cause across all sources is climate — shifting rainfall patterns and the loss of the insulating snowfall that traditionally protected saffron corms through winter — compounded, per Rifat Un Nisa, an agronomist who completed her PhD at Kashmir's own Sher-e-Kashmir University of Agricultural Sciences and Technology (SKUAST-K), by rapid urbanisation and land conversion, and by cheaper Iranian saffron flooding Indian markets and undercutting local growers on price. Many Kashmir farmers, she notes, are switching to apple and pear orchards instead. The government's own National Saffron Mission, launched in 2010-11 to fund irrigation infrastructure for the crop, has reportedly missed its own deadlines repeatedly, according to trade press coverage. The human cost of the decline is visible in occupations adjacent to the crop too: Frontline's reporting profiles Pampore's rachdaars, traditional night-time saffron-field guards, several of whom describe ending their multi-decade watch early or altogether simply because there is no longer enough crop left to guard.

CSIR's Indian Institute of Integrative Medicine (CSIR-IIIM), the institution most directly involved in Indian saffron research, has run its own cultivation trial at its Bonera field station since August 2020, and states its ambition plainly on its own website: to extend the crop "on commercial scale in different non-traditional areas of the Valley" under the Mission Atmanirbhar India banner. That is worth reading precisely — CSIR-IIIM's own stated scope is non-traditional areas of Jammu & Kashmir itself, not a national rollout to other Indian states. Any claim that a government-backed aeroponic saffron programme now spans Rajasthan, Uttar Pradesh, Haryana, or Maharashtra should be treated with real scepticism until a primary source says otherwise — this piece did not find one.

What is actually happening: verified cases, inside Kashmir and out

The real picture is more interesting than "a Kashmir mission versus outside entrepreneurs" — the indoor technique is being adopted on both sides of that line, and the best-documented cases are specific enough to check. Under NABARD funding, journalist-verified reporting from Mongabay India names Abdul Majeed Wani of Shaar-i-Shalli village, Pampore, growing saffron indoors since 2021, and Ali Mohammad of Charar-e-Sharief, Budgam, who began trials in 2023 — roughly five farmers across Pampore and Budgam have adopted the model. Their method is specific: corms must weigh 8 grams or more (ordinary field multiplication uses corms under 6 grams), corms cost roughly ₹40,000 per quintal, and a room is kept fully dark for 90 to 100 days (windows covered with black cloth or cardboard) to trigger the physiological changes needed for sprouting, before lighting is switched on to open the flowers. Total initial investment in Mohammad's case, including racks, trays and labour, ran to roughly ₹1 lakh for a 10×10 foot room. Crucially, the corms are not a permanent indoor fixture: after flowering they must go back into open field soil for a chilling phase of roughly 1,100 hours to regenerate for the next cycle — indoor saffron, as currently practised, is a hybrid technique bolted onto a still-outdoor corm-regeneration cycle, not a fully closed-loop vertical farm.

Outside Kashmir, the best-corroborated case is Praveen and Naveen Sindhu of Hisar, Haryana, who spent two months in Pampore in 2017 learning the process before converting a 225-square-foot rooftop room into an aeroponic setup in 2018. Their room holds up to 1,000 kg of corms in wooden trays and produces roughly 2 kilograms of saffron a year, sold under their own "Amaratva" brand at around ₹5 lakh per kilogram, including exports to the US, Dubai, and the UK — a case reported consistently across multiple independent outlets. A second documented case, reported by The Hindu and syndicated by the horticulture trade press VerticalFarmDaily, is Seshadri Sivakumar, a civil-engineer-turned-entrepreneur running LNS AgriTech near Sulthan Bathery in Wayanad, Kerala, who researched the technique in Pune before building an aeroponic operation. The same reporting gives a genuine, checkable density comparison: open-field saffron is planted at roughly 20–30 corms per square metre versus 200–300 corms per square metre in an aeroponic setup, and yields roughly 0.5–2 grams of dried saffron per square metre in the field versus 4–5 grams per square metre indoors — before vertical stacking multiplies the usable floor area a further 3 to 5 times.

A third named case adds a different growing format entirely: Shailesh Modak, a software engineer who left a 13-year career (including roles at ECS Pune and Barclays) to found 365D Farms, bought an insulated 8×40 foot shipping container in Mumbai for ₹5 lakh, moved it to Pune, and built a hydroponic saffron operation inside a 160-square-foot growing area — reporting the same yield from that space as roughly half an acre of traditional field cultivation would produce. Sourcing corms proved to be a real, reported logistics problem rather than a solved one: of the corms he ordered from Kashmir's Pampore region, only about 30% arrived in good enough condition to plant. His first harvest came to 875 grams, sold at ₹500 a gram (₹5 lakh/kg, consistent with the market range cited earlier), against a reported ₹10 lakh research-and-lab investment separate from the container cost — a real, named, multi-outlet-reported case (The Better India, Good News Network, VerticalFarmDaily) that also supplies actual backing for the "up to 95% less water" claim circulating more loosely elsewhere: Modak's own reported figure for his specific hydroponic system.

Two more independently reported cases round out the picture, both consistent with the pattern above. Gautam Rathod, in Talegaon near Pune, converted a 100-square-foot cold-storage room (built with siporex-brick insulation on a 200-square-foot rooftop) into an aeroponic setup: a chiller capable of 0°C, humidifier and dehumidifier units, and 24 grow lights across four racks of six shelves each, for a reported total setup cost of roughly ₹4 lakh. He started with 200 kilograms of Kashmir-sourced corms at ₹600/kg, reports three flowers per bulb per season across an October-to-January harvest window, and sells at ₹500–800 per gram (averaging around ₹6 lakh/kg) — a case reported by 30Stades, the same outlet that corroborated the Haryana brothers' figures. Separately, Gaurav Sabharwal in Solan, Himachal Pradesh, began a small aeroponic trial in 2022, funded by a PMEGP government loan of roughly ₹7–8 lakh, and had expanded to 300 square feet by 2023, running the room at 8–23°C to approximate Kashmir's climate and selling retail at around ₹5 lakh/kg; this case is reported by only one outlet found (Krishi Jagran) and should be weighted accordingly — solid on specifics, but without the multi-outlet corroboration the Haryana, Pune, or Modak cases have. A further widely-recycled claim — a Mangalore-based "hydroponic saffron" entrepreneur cited for a $700 million net worth and an unverified "Forbes India" honour — could not be corroborated against any primary Forbes listing or independent financial reporting and is deliberately left out of this piece; the pattern (self-published social-media posts and a single trade outlet recycling the same figures, with no operational detail about the actual saffron setup) matches what this piece treats elsewhere as an unverifiable claim, not a documented case.

The density and per-square-metre yield figures above (20-30 vs 200-300 corms/m²; 0.5-2g vs 4-5g/m²) come from The Hindu's reporting on the Kerala case as syndicated by VerticalFarmDaily, a specialist horticulture trade outlet — graded moderate-to-strong. The Kashmir NABARD-farmer figures (corm weight threshold, cost, dark-phase duration, chilling-hour requirement, and Wani's/Mohammad's individual yield and cost figures) come from Mongabay India's own field reporting, a strong independent source. The Haryana case is corroborated across multiple independent outlets (30Stades, Inshorts, Moneymint, Nursery Today) citing consistent figures, graded strong for the headline numbers though none of these outlets audited the brothers' own books. Setup-cost claims elsewhere in circulation range as high as ₹4-15 lakh for a small commercial operation — a wide spread from the ₹1 lakh Mongabay reports for a 10×10 foot Kashmir room, which likely reflects real differences in scale, region, and whether "setup cost" includes land, structure, and multiple growing cycles' worth of corms, rather than any one figure being wrong.

The light and growth-stage profile, from an actual peer-reviewed trial

None of the named grower cases above publish their own controlled light data, but a peer-reviewed trial published in Scientific Reports (Nature) gives the closest thing available to a real dose-response curve for indoor saffron flowering. Researchers grew saffron corms under a fixed photosynthetic photon flux density of 100 µmol m⁻² s⁻¹, a blue:red:far-red spectrum ratio of 20%:62%:18% (450nm blue LEDs, 660nm broad-band red), and a 10-hour photoperiod, then varied only the total daily light integral (TDLI) across nine treatments running from 79 to 166 mol m⁻², against a natural-light control of 58 mol m⁻². Flower number, stigma dry weight, and crocetin ester content (the compound behind saffron's colour) all rose linearly with TDLI up to a point, then flattened. The best-performing treatment, at 150 mol m⁻² TDLI, produced 3.63 flowers per corm and 24.19 mg of dried stigma per tray — 0.7 more flowers and roughly 50% more stigma weight than the natural-light control, with only marginal further gains found at TDLI levels above 150.

Separate peer-reviewed work on saffron's temperature response gives the staging a controlled-environment grower actually needs to plan around, distinct from the light-dose study above: corms are typically held at a warmer ~30°C for 2–3 weeks to break dormancy, then moved to roughly 25°C for 1–2 months for shoot growth and flower organogenesis, before a final drop to 15–20°C to trigger flower emergence — with optimal flower emergence itself occurring closer to 17°C. Humidity through this cycle is typically held around 60–80%. This staged-temperature approach is a more precise, laboratory-controlled version of the same underlying idea the Kashmir NABARD farmers are executing with a much blunter tool — a dark room and a black cloth over the windows for 90–100 days — which is itself a reasonable proxy for the same corm-dormancy-to-sprouting transition the temperature research isolates more precisely.

The light-dose figures (PPFD, spectrum ratio, TDLI treatments, flower number, stigma weight, crocetin content) are drawn from a peer-reviewed study published in Scientific Reports, a Nature-family journal — the strongest single source cited in this piece. The temperature-staging figures are drawn from separate peer-reviewed research on saffron flower initiation, also strong sourcing, but from a different study using a different experimental setup than the light-dose trial; the two should not be read as two halves of one single combined protocol, only as complementary findings from separate controlled trials.

The policy gap: a subsidy for greenhouses, not for vertical farms specifically

India does have a real, funded government subsidy for the broad category of infrastructure a saffron-growing entrepreneur would need: the National Horticulture Board's protected-cultivation assistance, administered under the Mission for Integrated Development of Horticulture (MIDH), covers polyhouses, greenhouses, and related structures at roughly 50% of project cost, up to ₹112 lakh per beneficiary, under the Board's 2025 guidelines. Individual farmers, farmer groups, and cooperatives are all eligible. But this is a general protected-cultivation scheme, not one written with vertical, aeroponic, or hydroponic urban farming specifically in mind, and this piece found no dedicated central scheme naming vertical farming or controlled-environment agriculture as its own category the way, say, PM Surya Ghar names rooftop solar. The Sindhu brothers and Sivakumar appear to be doing this on their own capital and initiative, not against a purpose-built government programme — which is also, on the evidence above, exactly the pattern the interest-subvention-versus-viability-gap-funding comparison on this blog has already found works better than a narrow, centrally-designed scheme when the underlying economics are sound enough that private capital will move on its own.

The market-size numbers for what this could become vary too widely to anchor a policy case on any single figure. Different market-research firms put India's vertical-farming market at $100 million in 2025 rising to $699 million by 2034 (one estimate), $0.79 billion in 2025 rising to $4.27 billion by 2035 (a second), $358.6 million in 2025 rising to $1.93 billion by 2033 (a third), and $62.2 million in 2024 rising to $200.1 million by 2030 (a fourth) — a genuinely wide spread for supposedly the same underlying market, which is the signature of vendor-modelled estimates built on different, largely undisclosed scope assumptions rather than a measured figure. The direction (up, and steeply) is probably real; the specific number in any one report is not something this piece is treating as reliable.

Sources and caveats