How Long Does It Take to Grow Mushrooms? By Species

Oyster mushrooms are the quickest to grow from scratch, at about five weeks from inoculation to harvest on straw (Cornell). Wine cap takes 2 to 6 months, and shiitake on logs takes 6 to 18 months. Lion’s mane has no extension timeline at all, only a 47-day figure from one trial. How long mushrooms take depends on the species, the route and what you count as the start, so this post puts each source’s number side by side and shows where they conflict.

Time to first harvest, by species and route

Where the numbers conflict

Oyster: three weeks or five. UF’s three weeks marks when pins start, and Cornell’s five weeks is when you pick. Both can be true. Cornell describes commercial production, so home batches vary more.

Wine cap: 42 days or six months. The trial’s 42 to 51.7 days comes from controlled beds in a research setting. Cornell and NC State’s 2 to 6 months is the US extension range, and Kentucky’s two months to a year is wider still. For a home bed, plan on months, not weeks.

Shiitake: 12 months or 18. Cornell and Maryland give 6 to 18 months, and Wisconsin says about 12. Plan for the long end if your first logs are slow.

Lion’s mane: one trial. The 47 days is from bottles of rubber-tree sawdust spawned with grain spawn. It is one study’s result, not a rule. A kit arrives already colonized, so it starts later in that process.

What the clock starts on

A kit begins at fruiting. A bucket or straw bag begins at inoculation, after you have pasteurized the substrate. Logs begin at the drill, and the long wait is the mycelium colonizing solid wood. Our guide to growing mushrooms lays out the four stages, and a mushroom grow kit skips the first three.

What changes the clock

Temperature. For the oyster spawn run UF gives 24 to 25°C (75 to 77°F), while Cornell says to keep incubation near 70°F and never above 80°F. For wine cap, one review gives mycelial growth between 5 and 35°C with an optimum of 26°C, and says growth slows below 10°C. That is a research figure, not a home rule, but it fits a slow first season in a cool spring.

Strain. Cornell says Cold-Weather shiitake strains need a longer spawn run than Wide Range or Warm Weather strains. Check which one your spawn is before you count months.

Patience on logs. Cornell says growers who waited longer before the first soak got significantly greater shiitake production, so a longer wait is not always a worse result. Once logs are soaking, pins appear 3 to 5 days later, and Cornell says to rest logs 6 to 8 weeks between forcings.

Season. Wine cap can be inoculated at any point in the growing season (Cornell, NC State), and a review says fruiting typically appears in spring and autumn. Cornell says winter and spring are the ideal times to inoculate shiitake logs.

What our sources do not give

We found no timeline for a retail kit, no full colonization time for shiitake sawdust blocks, and no extension timeline for lion’s mane. Where a number is missing we leave it blank rather than guess, so check your supplier’s instructions for those.

After the first mushrooms

Waiting buys different payoffs. UF expects two to four more oyster flushes after the first. Cornell says a shiitake log fruits twice a year for three to four years, with upwards of 8 ounces per flush, and Maryland says about three to five years. Cornell says an established wine cap patch can last several seasons.

Choosing by how long you can wait

• Weeks: oyster. See oyster mushrooms and the oyster kit page.
• A few months: wine cap in a bed. See wine cap.
• A year or more: shiitake on logs. See shiitake.
• Unknown: lion’s mane, because our sources give no extension timeline.

For more, see our beginner mushroom collection or outdoor mushrooms. If a batch stalls, read mushroom growing mistakes.