How do you start mushroom logs
Emily Dawson
Published Apr 13, 2026
Obtain mushroom spawn (fungal tissue in a carrier medium, usually sawdust) and tools.Harvest logs to inoculate.Drill holes in logs.Fill holes with mushroom spawn.Seal the holes with wax.Set logs in a place they will stay moist.Wait for colonization of logs by spawn.
How do I activate mushroom logs?
When you first get your mushroom log, simply soak it overnight submerged in cold water, then decide where you want it to grow. Your mushroom log can be grow inside or outside. Your mushroom is alive and living INSIDE your log. All you need do is give your LOG a place to live in the shade, and keep it watered.
How do you grow mushroom plugs in logs?
- Step 1: Choose your wood. Look on the package for your particular mushroom plugs to identify what type of wood they require. …
- Step 2: Drill the holes. …
- Step 3: Hammer in the plugs. …
- Step 4: Apply Beeswax. …
- Step 5: Stack the logs. …
- Step 6: Water and wait.
When should I start mushroom plugs?
Spring is generally the best time to plant mushroom logs for several reasons. First, it is best to cut logs during the dormant season before the buds swell in the spring. Logs can be stored until planting when the daytime temperature consistently reach 40°F or higher.How do you apply wax to mushroom logs?
It also helps to keep other fungi out, limiting competition in your log. Wax should be applied to any areas where the bark is damaged or missing. This includes the holes you have drilled for plugs, as well as the cut ends of the log. Simply melt the wax, and use a brush to “paint” a thin layer onto the exposed area.
What time of year do you inoculate mushroom logs?
The best time to cut logs is in early spring before trees have budded out. Only living, disease-free wood should be cut for mushroom logs. The best time to inoculate logs is in spring, within one to two weeks after the logs have been cut.
Do mushroom logs smell?
What does Healthy Mycelium/Mushrooms smell? The growing mycelium should give off a clean mushroomy smell (similar to the end fruiting product), it should be mild and not overwhelming. Any foul or strong smells should be observed in an attempt to discover whether your substrate is contaminated.
How do you water mushroom logs?
Start by soaking your logs completely for 24 hours in cold non-chlorinated water. You can train a sprinkler on them or soak them in a tub or barrel. A five-gallon bucket works well for a 12” log. You shouldn’t use chlorinated water, but rain water or city water (such as in Minneapolis anyway) is good.How often do you water mushroom logs?
It’s advisable to mist or water the logs 1–2 times daily until you start to see mushroom primordia (baby mushrooms) emerge from the logs. This will usually take 7–10 days depending on the temperature and humidity.
How do you get mushroom spores?Lay the cap on a white piece of paper or index card with the gills or pores on the bottom of the cap facing down. If collecting spores from a large mushroom cap, you may cut the cap into sections, placing only one section on the paper; use multiple pieces of paper to collect spores from multiple sections if desired.
Article first time published onHow do inoculate logs with sawdust spawn?
For sawdust spawn, tightly pack sawdust into the inoculation tool and inject the spawn into each 7/16” diameter hole, completely filling the hole. Cover each hole with melted wax using a brush, wax dauber, paintbrush or rag. Eventually, after the log is colonized, wax will flake off.
How do you seal mushroom plugs?
Cheese wax is used to seal in mushroom plugs once the log has been inoculated with mushroom plug spawn. It can be dripped on or applied with a small foam brush, baster, cotton daubers or other such applicators. One pound of cheese wax will cover 8 – 16 logs @ 30 plugs per log.
How do you make a mushroom spawn?
Mushrooms need a moist and humid environment to grow, even just to form mushroom spawn. You want to pour boiling water over it, let it cool, and then drain off the excess. The boiling water helps to kill most of the wild molds, yeasts, or other fungi that might be on the cardboard or just floating around in the air.
What kind of wax do you use for mushroom logs?
A clear food-grade paraffin wax ideal for sealing holes in inoculated logs. One pound of wax is enough to seal about 10 logs with some variability depending on the size of the logs and whether you choose to seal the ends.
Can I use beeswax to seal mushroom logs?
The best way to seal the log is with beeswax, as it’s the most natural substance for the job. The mushrooms absorb whatever they come into contact with, so obviously you don’t want to use petroleum or artificially based waxes or sealants on your food.
Where do you put shiitake mushroom logs?
Once the log has hydrated for 24 hours, choose a nice shady spot in your yard for your mushroom log. You can lean the log against a shady fence or tree. The end of the log should be elevated off the ground a few inches. Check the log for moisture content every few weeks to make sure it is not drying out.
What do you do with mushroom logs in the winter?
With temperatures generally below freezing, it’s about time to shelter your mushroom log kit a bit more for the winter. I’d recommend putting your log in an unheated garage or shed, since that will protect it from freezing winds. It’s those sub-zero winds that can be damaging to them.
How big should mushroom logs be?
Ideal log dimensions for mushroom growing are between 3 and 4 feet (up to 1.25m in length) and a diameter of 3 to 10 inches (8 to 25 cm.) Alternatively, you can also inoculate fresh tree stumps using the same techniques that you’d apply to logs.
How long should mushroom logs be?
Look for trees around 4-8” in diameter and cut them into logs approximately 3-4 feet long. Your log should last one year for every inch in diameter however the larger the log, the longer it will take it to colonize and fruit.
How do you start a shiitake log?
Shiitake logs will fruit naturally after a soaking rain when they are ready, but it’s better to induce fruiting by soaking two or three logs in cold water for 24 hours, and then giving each soaked log a solid knock with a hammer, which seems to excite the fungi.
Can you inoculate logs in summer?
You can usually begin to inoculate logs one month before the average last frost date as long as day-time temperatures are above 40o F. If you cut logs during summer, it is best to inoculate them within 3 weeks after they have been cut so that the logs will still have an adequate moisture content.
How do you inoculate oak logs with mushroom plugs?
- Obtain mushroom spawn (fungal tissue in a carrier medium, usually sawdust) and tools.
- Harvest logs to inoculate.
- Drill holes in logs.
- Fill holes with mushroom spawn.
- Seal the holes with wax.
- Set logs in a place they will stay moist.
- Wait for colonization of logs by spawn.
How do you grow a mushroom from the stem?
Cut the ends into small pieces. The best size for growing mushrooms from store bought stems is ¼ inch (6 mm.). You can use a cardboard box, paper bags, or even a plastic bin to layer your medium. Place some of the straw or other moist material at the bottom and add mushroom end pieces.
Can you inoculate mushroom logs in fall?
Plugging your logs must take place zero to two months from the date that the tree was felled, but the sooner the better. Best time of the year to cut is winter into spring when the trees are completely dormant. However, you can inoculate at any time during the winter months.
What is sawdust spawn?
Sawdust spawn consists of mycelium grown into hardwood sawdust and is the preferred spawn of many commercial growers for growing Shiitake, Oyster, Nameko, Lion’s Mane, Comb Tooth, Olive Oysterling, Maitake, Chicken of the Woods, and Chestnut mushrooms on logs.
How much wax do you put in mushroom plugs?
We recommend approximately 5oz of sealing wax per bag of plugs. Soy wax has a low melt temperature (185* F) so take great care in heating wax to avoid over-heating and possible fire hazards.
Can you use soy wax for mushroom logs?
After inoculating logs with plug spawn or sawdust spawn, cover with melted soy wax to retain moisture and keep competitors out while your mushroom colonizes the log. Easily applied with a wool dauber, a brush or turkey baster.