Mushroom Season in India: A Month-by-Month Growing Calendar

Ask when mushroom season is in India and you will get contradictory answers, because most of what is written on the subject quietly assumes North India and Button mushroom. That assumption is reasonable enough — Button accounts for the large majority of India’s commercial production, and it genuinely does have a season. But it leaves a grower in Kerala or Assam with advice that does not fit their weather at all, and it leaves a grower anywhere in India believing that eight months of the year are simply unavailable.

They are not. Somewhere in the country, in every month of the year, one of these four mushrooms is in its ideal range. This guide sets out which one, and when.

1. Why India has four seasons, not one

Mushrooms do not respond to the calendar. They respond to temperature and humidity, and each species has a narrow band it fruits in. Get the band right and the mushroom crops readily; miss it and no amount of care will produce a decent flush. India’s advantage — and the reason the question has no single answer — is that the country spans enough climate to keep at least one of those bands open at all times.

Read that table as a single continuous strip rather than four separate rows. As the plains warm past Button’s ceiling in March, Milky’s window is opening. As the monsoon arrives and Milky becomes harder to manage, Paddy Straw comes into its own. And Oyster runs quietly underneath all of it, which is precisely why it is the crop we recommend beginners start with.

2. The month-by-month calendar

This calendar describes the northern and central plains, where the seasonal swing is sharpest and the choices matter most. Southern and north-eastern growers should read the regional section below instead, because their year is far flatter.

3. Temperature and humidity requirements by variety

“Season” is really shorthand for two numbers: temperature and relative humidity. If you can hold those two figures, the month on the calendar stops mattering. The table below is the one worth pinning to your growing room wall, because almost every seasonal failure traces back to a number in it.

Note that mushrooms need two different temperatures at two different stages. Spawn run — the phase when mycelium colonises the substrate in the dark — generally wants conditions a few degrees warmer than fruiting. Dropping the temperature is part of what tells the crop to start producing mushrooms.

4. Button mushroom season

Season: October to March in the plains, with the peak from November to February.

Button mushroom fruits at 15–22°C, which in Haryana, Punjab, Uttar Pradesh and Bihar means the cool half of the year and nothing else. This is the crop that gave India its idea of a mushroom season, and in the plains that idea is broadly correct: outside those months you are looking at a cooled room and an electricity bill that rarely justifies itself.

The hills change the arithmetic considerably. Himachal Pradesh has enough natural elevation to grow Button across much of the year, which is why the state became India’s early centre for it and why Solan is still known for mushroom research. Uttarakhand stretches to roughly September through April, and Jammu and Kashmir inverts the pattern entirely with a season running April to November, since its winter is too cold rather than too warm.

One metro is worth singling out. Bengaluru sits at around 900 m, and its November-to-February nights fall close enough to Button’s range that modest insulation and a small cooling unit can bridge the gap — something no other southern metro can claim. We cover that in detail in our Bangalore training guide.

5. Oyster mushroom season

Season: year-round across most of India.

Oyster tolerates 20–30°C, a band that covers the normal working range of the tropical coastal, tropical wet and north-eastern states for the whole year. In Kerala, Goa, Tamil Nadu, Telangana, Assam and the rest of the north-east there is no Oyster season, because every month is one.

Even in the northern plains, Oyster is close to year-round. It runs comfortably from September through May and only genuinely struggles in the peak heat of May and June, when growers either pause for a few weeks or keep going with misting and increased ventilation. Yields fall in those weeks but the crop does not fail.

This is the single most useful fact for a new grower, and it is why we start almost every beginner on Oyster: you do not have to wait for a season to begin. Whatever month you are reading this in, you can start an Oyster batch. Full method is in our oyster mushroom farming guide.

6. Milky mushroom season

Season: March to September, peaking through the hottest months.

Milky mushroom (Calocybe indica, known as paal kaalan in Tamil Nadu and doodh chhatri in the north) is the crop that answers the question every Indian grower eventually asks: what do I grow when it is too hot for everything else? It fruits at 25–35°C, temperatures that would stop Button entirely and slow Oyster to a crawl.

Two further advantages make it worth learning. It has a noticeably longer shelf life than Oyster, which matters when summer transport is unkind to fragile produce. And because relatively few growers bother with it, summer supply is thin and prices hold up well. It is firmly established in Tamil Nadu, Andhra Pradesh, Telangana and Karnataka, and increasingly viable in the central plains during April and May.

7. Paddy straw mushroom season

Season: the monsoon months, roughly June to September.

Paddy straw mushroom (Volvariella volvacea) wants 30–38°C with very high humidity — conditions that describe the Indian monsoon almost exactly. It is the traditional crop of West Bengal, Odisha and the north-eastern states, grown on the rice straw those regions have in abundance, and it turns the most difficult growing months of the year into the easiest.

It is a fast crop, often ready inside two weeks, but a short-lived one: harvest at the button stage before the veil opens, and expect a shelf life measured in days rather than a week. That makes it a local-market mushroom rather than something to ship, which suits a grower selling into a nearby town.

8. Spawn-to-harvest: how long each crop takes

Knowing the season is only half the planning. The other half is knowing how far ahead of it you have to start, because every crop has a lead time between spawning and your first sale. Growers who read the calendar but ignore the lead time consistently begin a month late.

Work backwards from these figures and the practical planting dates fall out on their own:

• Button: to harvest through November, start composting in early September. Compost alone eats a month before you have spawned anything.
• Oyster: roughly three weeks from spawning to first flush, so you can respond to a market opening almost within the month.
• Milky: spawn in March to catch the peak summer price window in May and June.
• Paddy Straw: the sprinter, at under three weeks start to finish, which is why it fits neatly into a short monsoon window.

9. Season by region and climate zone

India’s 27 mushroom-growing states fall into a handful of climate zones, and your zone matters more than your state border. The pattern below is drawn from the state-level data behind our 27 state guides.

The broad rule is simple enough to remember: the further north and higher you are, the more the calendar matters. The further south you are, the less it does. A grower in Kerala can start any week of the year. A grower in Rajasthan has a genuine Button window of about four months and should plan around it.

10. Growing through the monsoon

The monsoon has a reputation as the impossible season, and it is worth being precise about why, because the common belief is wrong. Mushrooms love monsoon humidity — the moisture that makes the air feel heavy is exactly what fruiting bodies want. The difficulty is not the weather. It is that warm saturated air suits Trichoderma, competing moulds and bacteria every bit as well as it suits your crop.

So the monsoon problem is a contamination problem, and it responds to hygiene rather than climate control:

• Pasteurise properly, not approximately. This is the single highest-leverage habit in the wet months, and the one most often rushed.
• Keep a dedicated clean area for spawning. It need not be elaborate — a small, wiped-down, draught-free corner used for nothing else.
• Move air, do not trap it. An exhaust fan matters more than a sealed room. Stagnant humid air is what turns a minor contamination into a lost batch.
• Store substrate dry and raised. Straw that has absorbed monsoon damp before you even begin is already a problem.
• Run smaller batches deliberately. Reducing volume through July and August is a strategy, not a retreat. Losing 20% of a small batch costs far less than losing 20% of your largest.

Growers who plan for a reduced monsoon cycle stay profitable through it. Growers who push peak volume into their hardest conditions lose batches and often conclude, wrongly, that mushrooms simply cannot be grown in the rains.

11. How season affects mushroom price and profit

The calendar is not only about what will grow. It is about what will pay, and the two do not always point the same way. Mushroom prices in India move inversely to supply, and supply is driven by exactly the seasonal pattern described above.

The result is a predictable annual rhythm that many growers only notice after their first full year:

• Peak season means peak supply, and softer prices. Through December and January, every Button grower in the northern plains is harvesting at once. Mandi rates fall precisely when your yields are highest.
• Off-season means thin supply, and stronger prices. In May and June, very little is coming to market. A Milky crop landing in those weeks meets far less competition than a Button crop in December.
• Festival demand is a genuine spike. Demand lifts noticeably around the Diwali-to-wedding-season stretch, which happens to sit right at the start of the Button window — a good reason not to be late with September composting.

This is the strategic argument for learning a second variety. A grower who only knows Button harvests into the most crowded market of the year and sits idle through the months when prices are best. A grower who runs Button in winter and Milky in summer sells in both, and the summer crop often carries the better margin per kilogram despite the smaller harvest.

None of this replaces doing your own numbers — local mandi rates vary widely and the picture in Sonipat is not the picture in Coimbatore. Our mushroom farming cost and profit guide walks through the full calculation, and the subsidy schemes guide covers the support available for building the infrastructure that extends a season.

12. How to grow off-season

If you want to grow a particular mushroom outside its natural window, you have three honest options, and they are not equally sensible.

Our advice to nearly every new grower is the first option. Off-season Button in a Chennai or Mumbai summer is technically achievable and almost never worth it; a Milky crop in the same room during the same weeks will cost less and sell for more. Work with the climate you have — the calendar above exists so that you can.

13. Five seasonal mistakes that cost growers money

Across the farmers we have trained, the same five seasonal errors come up again and again. None of them are exotic, and all of them are avoidable once the calendar above is understood.

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Dr. Sonia Dahiya

Founder of Shroomy Delights Agro Tech and the “Mushroom Lady of Haryana.” 10,000 kg/month production, 100+ farmers trained across India.

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