Mushrooms You Can Grow Outdoors: Logs and Garden Beds
Mushrooms to grow outdoors: shiitake on hardwood logs and wine cap in a shaded garden bed, with the timing, wait and season each extension source gives.
Two mushrooms in our guides grow outdoors with little daily work: shiitake on hardwood logs and wine cap in a garden bed. Both trade speed for low effort, and both wait on the weather. Everything here is as our extension sources state it, and a conflict between sources is shown, not smoothed over. We cover growing mushrooms you buy spawn for, never wild identification or foraging.
Logs or bed
| Mushroom | Where | Season | Wait |
|---|---|---|---|
| Shiitake | Fresh-cut hardwood logs | Inoculate winter or spring (Cornell); summer and fall also work | 6–18 months (Cornell, Maryland) |
| Wine cap | Shaded bed of hardwood chips or straw | Any time in the growing season (Cornell, NC State) | 2–6 months (Cornell, NC State) |
Shiitake on logs
Cornell says to cut live, dormant logs and inoculate within three weeks, while Wisconsin rests them two weeks first. Seal each hole with wax. Once night temperatures average above 50°F, Cornell says to soak logs for 12 to 24 hours (Wisconsin says 24), and pins appear 3 to 5 days later. A log then fruits twice a year for three to four years, with upwards of 8 ounces per flush (Cornell). Read growing shiitake on logs, harvesting shiitake and our guide to growing mushrooms on logs.
Wine cap in a bed
Spread spawn over a 2-inch (5 cm) layer of watered wood chips (Kentucky) and keep the bed heavily watered for the first four days. Cornell and NC State put the first mushrooms at 2 to 6 months, Kentucky at two months to a year, and one Chinese trial at 42 to 51.7 days. A review says fruiting typically comes in spring and autumn, without giving months. See when to harvest wine cap and our substrate guide.
What is not covered
We have no sourced outdoor method for oyster or lion’s mane. Cornell does say oyster straw can be inoculated outdoors with little contamination concern, but fruiting is best indoors, so see our oyster page.
How to choose
- Patient, with hardwood logs? Shiitake keeps producing for years.
- Have a shaded garden bed? Wine cap.
- Want a faster start? Try indoor mushrooms or the beginner collection.
- Unsure what went wrong? See mushroom contamination.
