Tend and Fruit
Mushroom Logs: Plug, Hammer & Wax▾
- 1Choosing Your Log
- 2Drill the Holes
- 3Plug and Hammer
- 4Seal with Wax
- 5Tend and Fruit
The long, quiet job
Your log looks finished, but the real work is only beginning — and most of it is invisible. Inside the wood, the mycelium is spreading slowly from every waxed hole, eating through the log and knitting it together into one big fungus. This stretch is called the spawn run, and it is a test of patience. It usually takes 6 to 12 months, and sometimes up to two years.
Your job now is stewardship: taking care of the log month after month so the mycelium can do its thing.
Where to rest the log
Stack or lean your log in a spot the mycelium will love:
Shady, out of direct sun, under trees or a shade cloth.
Off the ground a little, resting on a rail or other logs, so it does not soak up soil fungi.
Sheltered from drying wind.
Damp. If weeks go by with no rain, give the log a good watering so it never dries out.
Check on it now and then, like visiting a slow-growing pet. You might spot the wax caps darkening or white mycelium showing at the log ends — signs the fungus is winning.
Waking it up to fruit
After many months, when the log is fully colonised, you can trigger a crop. In nature a cold autumn rain does this. You can copy it by soaking the whole log in cold water for about 12 to 24 hours — a tub, a stream, or a big bucket with an adult's help.
The soak shocks the mycelium into fruiting. Then watch closely: within about 5 to 14 days, tiny shiitake pins push out through the bark and swell into mushrooms. It feels like magic after such a long wait.
Harvest, rest, repeat
Pick shiitake when the caps have opened but the edges are still curled slightly under. Twist or cut them off cleanly. Then comes the amazing part: the log is not used up. Let it rest for about 8 to 10 weeks to rebuild its energy, soak it again, and it will fruit once more. A good log keeps giving crops for 4 to 8 years.
Eating your reward
When it is time to eat:
Wash your hands, and brush any bits off the mushrooms.
An adult cooks the shiitake — they are always cooked, never eaten raw.
Enjoy your harvest, grown from a plain log and a lot of patience.
The forever rules, one more time: we only grow and eat this known, cultivated shiitake because it came from trusted spawn. Wild mushrooms are for looking at and recording only — never touch, pick, or eat them. And every mushroom is cooked with an adult before eating.
You planned, measured, plugged, waxed, and waited. You turned a log into a farm that will feed you for years. That is real stewardship — well done, log grower!
Answer every question, then check how you did. You can try as often as you like — your score is just for you.
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Sign inRelated grow kits
These optional kits are sold in our external webshop. Learning here stays free. A grown-up handles orders and follows the kit instructions.
The linked shop kit is a prepared shiitake block. This lesson describes logs and plugs, which require different materials and instructions.