Paddy Straw Mushroom (Volvariella volvacea)
A fast, warm-season mushroom grown directly on bundled fresh paddy straw rather than pasteurised loose straw — a natural fit for paddy-growing regions where straw is abundant right after harvest, though named strains distinct from the species-level classification are not widely documented for Indian commercial spawn, so it is represented here honestly as a species rather than a specific named cultivar.
Quick facts
- Crop
- Mushroom
- Type
- Spawn (species)
- Season
- Kharif
- Maturity period
- 10–15 days to first flush — one of the fastest cultivated mushrooms
- Expected yield
- Lower biological efficiency than oyster mushroom, but compensated by the very short cycle and fresh paddy straw availability after harvest
- Suitable soil
- Grown directly on fresh, unpasteurised-to-lightly-treated paddy straw bundles, not soil
- Release
- Species-level cultivation supported by ICAR-DMR Solan's research accessions; no single widely branded commercial strain name dominates the Indian market the way S-11 does for button mushroom
About this variety
Paddy straw mushroom (Volvariella volvacea) is grown directly on bundled fresh paddy straw rather than on the loose, hot-water-pasteurised straw used for oyster mushroom, and needs genuinely hot, humid conditions (roughly 30–35°C) to fruit at all, making it strictly a warm-season crop. Its main advantage is speed — a flush can appear within 10–15 days of spawning, the shortest cycle of any commercially grown mushroom in India — and it fits naturally into paddy-growing regions of the east and south where fresh straw is abundant right after the kharif harvest. India's ICAR-DMR spawn programme works with a number of research accessions of this species, but named commercial strains are less standardised in the market than for oyster or button mushroom, so growers most often simply buy "paddy straw mushroom spawn" as a species rather than a specific branded cultivar.
Key characteristics
Yield & maturity
Maturity period
10–15 days to first flush — one of the fastest cultivated mushrooms
Expected yield
Lower biological efficiency than oyster mushroom, but compensated by the very short cycle and fresh paddy straw availability after harvest
Actual yield depends on sowing time, soil, irrigation, weather, seed quality and crop management.
Pest & disease considerations
Major diseases
- Needs genuinely hot, humid conditions (30–35°C) to fruit at all; not usable in the cool season
Advantages & considerations
Why farmers may choose it
- The fastest cropping cycle of any commercially grown mushroom in India — a flush within 10–15 days
- Uses fresh straw directly after paddy harvest, fitting naturally into an eastern/southern paddy-farming calendar without competing for the pasteurised-straw supply oyster mushroom needs
Things to consider
- Strictly a hot-season crop (30–35°C) — cannot be cropped through the cool months the way oyster or button mushroom can
- Shorter shelf life than most other cultivated mushrooms, and lower biological efficiency per kg of straw than oyster mushroom
- Named commercial strains are less standardised than for button/oyster mushroom — confirm what a spawn lab is actually supplying before buying at scale
Suitable regions
States this variety is recommended for — check locally, since a state can have more than one recommended zone.
- Odisha
- West Bengal
- Tamil Nadu
- Andhra Pradesh
- Bihar