Milky mushroom
Calocybe indica · APK-2 · v2.0.0
Developed in India and suited to it. Fruits at 30–35 C, which means it needs no cooling in a Tamil Nadu or Andhra summer while every other species in this list needs a chiller. Long shelf life and a firm cap that travels. Needs a casing layer.
Spawn run
Advances after 18 days, or when you say so| Signal | Target | Band | Switches on |
|---|---|---|---|
| Air temperature | 32.0 °C | 31.0 °C – 33.0 °C | heater, cooler |
| Relative humidity | 85.0 % | 82.5 % – 87.5 % | humidifier |
| Carbon dioxide | 8,000 ppm | 6,500 ppm – 9,500 ppm | exhaust, intake |
| Light | dark | — | lights |
| Fresh air, minimum | 0.2 changes/hour | — | exhaust, intake |
Slower than oyster. Eighteen to twenty days is normal and is not a sign that anything is wrong.
Vapour pressure deficit at these targets: 0.71 kPa. That is what 85% humidity means at 32.0 °C — the figure the crop responds to, and the one a hygrometer cannot show you.
Casing
Advances after 8 days, or when you say so| Signal | Target | Band | Switches on |
|---|---|---|---|
| Air temperature | 32.0 °C | 31.0 °C – 33.0 °C | heater, cooler |
| Relative humidity | 88.0 % | 86.0 % – 90.0 % | humidifier |
| Carbon dioxide | 5,000 ppm | 4,000 ppm – 6,000 ppm | exhaust, intake |
| Light | dark | — | lights |
| Fresh air, minimum | 0.5 changes/hour | — | exhaust, intake |
Garden soil and sand will do, sterilised. Milky is far less fussy about casing composition than Agaricus is.
Vapour pressure deficit at these targets: 0.57 kPa. That is what 88% humidity means at 32.0 °C — the figure the crop responds to, and the one a hygrometer cannot show you.
Primordia initiation
Advances when you mark "pins observed", or after 6 days| Signal | Target | Band | Switches on |
|---|---|---|---|
| Air temperature | 32.0 °C | 31.0 °C – 33.0 °C | heater, cooler |
| Relative humidity | 88.0 % | 86.5 % – 89.5 % | humidifier |
| Carbon dioxide | 1,000 ppm | 800 ppm – 1,200 ppm | exhaust, intake |
| Light | 9 h at 500 lux | — | lights |
| Fresh air, minimum | 3.0 changes/hour | — | exhaust, intake |
No temperature drop. Milky pins on fresh air and casing moisture, not on a cold shock — which is exactly why it works where oyster does not.
Vapour pressure deficit at these targets: 0.57 kPa. That is what 88% humidity means at 32.0 °C — the figure the crop responds to, and the one a hygrometer cannot show you.
Fruiting
Advances after 6 days, or when you say so| Signal | Target | Band | Switches on |
|---|---|---|---|
| Air temperature | 32.0 °C | 31.0 °C – 33.0 °C | heater, cooler |
| Relative humidity | 86.0 % | 84.5 % – 87.5 % | humidifier |
| Carbon dioxide | 1,100 ppm | 900 ppm – 1,300 ppm | exhaust, intake |
| Vapour pressure deficit | 0.67 kPa | 0.58 kPa – 0.76 kPa | humidifier, in advanced mode |
| Light | 9 h at 500 lux | — | lights |
| Fresh air, minimum | 3.5 changes/hour | — | exhaust, intake |
At 32 C, 86% RH is a deficit around 0.67 kPa — several times what an oyster room runs. The species tolerates it; do not read the number as an error.
Vapour pressure deficit at these targets: 0.67 kPa. That is what 86% humidity means at 32.0 °C — the figure the crop responds to, and the one a hygrometer cannot show you.
Harvest
Advances when you mark "harvested", or after 2 days| Signal | Target | Band | Switches on |
|---|---|---|---|
| Air temperature | 32.0 °C | 31.0 °C – 33.0 °C | heater, cooler |
| Relative humidity | 84.0 % | 82.0 % – 86.0 % | humidifier |
| Carbon dioxide | 1,200 ppm | 1,000 ppm – 1,400 ppm | exhaust, intake |
| Light | 9 h at 500 lux | — | lights |
| Fresh air, minimum | 3.0 changes/hour | — | exhaust, intake |
Keeps four to five days at ambient, which is its commercial advantage over both oysters.
Vapour pressure deficit at these targets: 0.76 kPa. That is what 84% humidity means at 32.0 °C — the figure the crop responds to, and the one a hygrometer cannot show you.
Alarms
These do not switch anything. They sit outside the control loop deliberately, so that a bug in the control logic cannot also silence the thing that wakes you.
- Air above 38 °C
- Air below 22 °C
- Humidity below 72%
- CO2 above 5,000 ppm
Have Claude read this for you
Optional, off by default, and it uses your own Anthropic API key rather than ours. It is shown the findings this page already computed and is told it may not invent a number — no setpoint, no threshold, no duty cycle. It ranks what matters and says it in two sentences. It is never in the control loop: nothing on your board waits on it, and if it is switched off everything here works exactly the same.
A room review sends about 2,000 tokens and gets back about 600 — roughly US$0.03, or under three rupees.
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Paste the key under Settings → Mushroom in the dashboard. It is stored on this site and sent only to api.anthropic.com, only when you press the button.
These targets are derived from published literature, not measured on your substrate, your strain or your room. Treat any recipe you have not validated on your own farm as a hypothesis. The yield log exists so that your second run can correct your first. Literature-derived. Not yet validated on a farm.