How to Grow Mushrooms with the Totem Method

A few terms make the rest of this guide easier to follow.

• Round: a short cross-section cut from a trunk or thick limb, like a thick slice of a log. A totem usually uses short, wide rounds rather than full-length bolts.
• Spawn: living mushroom mycelium growing through a carrier material. Sawdust spawn — hardwood sawdust already colonized by mycelium — is the straightforward choice for layering between cut faces.
• Inoculation: introducing that spawn into a fresh substrate. With a totem, inoculation means spreading spawn onto the cut face of one round and setting another round on top.
• Colonization: the quiet period when the mycelium grows out of the spawn and into the surrounding wood. Most of the work happens where you cannot see it.
• Fruiting: the stage when a fully colonized totem produces mushrooms, usually in response to moisture, fresh air, and a seasonal temperature change.

A conventional log grow uses a long bolt — a full-length log — drilled with many holes, each filled with spawn and sealed with wax. A totem takes the opposite shape: instead of one long log with many small inoculation points, it stacks a few short, wide rounds and places a layer of spawn between each pair of cut faces.

The mycelium grows outward from each spawn layer into the wood above and below it. Because the cut faces expose a large area of fresh sapwood — the living outer wood just beneath the bark — the spawn has a generous surface to colonize from.

A totem is a practical answer for wood that does not fit the ordinary log-growing mold.

It tends to make sense when:

• A trunk or limb is too thick to handle comfortably as a long bolt
• You want to use a short section rather than a full-length log
• You have sawdust spawn but not a full drill-and-fill tool setup
• You are working with a species that takes well to layered wood, such as oyster or lion’s mane

Oyster and lion’s mane are commonly named as practical totem and stump species. Shiitake can also be grown this way, though it is slower and its first fruiting may take a year or more.

The totem method is not automatically easier than drilling logs. You trade the repetitive drilling for chainsaw work and heavy lifting. A wide round of dense hardwood can be surprisingly heavy, and the finished stack has to stay upright through months of weather. Choose the method that fits your wood, your tools, and your back.

If your wood is better suited to long logs, our standard drill, fill, and wax inoculation guide covers that method in detail.

Start with the mushroom, not the wood. Choose a known legal edible species and strain from a reputable supplier first, then select wood that the supplier lists as compatible with that strain.

The mushroom must be able to digest the wood you give it. A totem built with incompatible wood may sit for a season and produce nothing, no matter how carefully it is stacked.

Common pairings are a starting point, not a universal compatibility chart:

• Oyster: often favors softer hardwoods such as poplar or tulip poplar, willow, box elder, or similar supplier-approved woods. Oyster is forgiving and tends to colonize quickly.
• Lion’s mane (Hericium): commonly paired with beech, birch, maple, hackberry, mulberry, or other supplier-approved hardwood.
• Shiitake: often uses denser hardwood such as oak or sugar maple. It can be grown as a totem, but expect slower colonization and a longer wait for first fruiting.

These are examples. Not every species or strain works on every hardwood, and a wood that performs well in one climate may behave differently in another. Always cross-check the supplier’s compatibility guidance for the specific strain you bought.

For more on the carrier that holds the living mycelium, see our explanation of grain, sawdust, and plug spawn.

Use healthy wood from a living hardwood tree. The bark should be intact, because it helps the rounds hold moisture through the long colonization period. Avoid wood that is already dead, decaying, badly dried, or losing its bark — wild fungi may already be established inside it.

Cutting during the dormant season, after the leaves have fallen and before the trees leaf out again, is often the easiest window. Cooler weather means fewer active insects and competing fungi, and bare branches make the trees lighter and easier to handle.

Identifying trees is easier while the leaves are still visible. If you can, scout during late summer or early fall and mark the trees you intend to use. A blaze-orange ribbon can mark trees planned for removal, and a blue ribbon can mark trees you want to keep — useful wildlife trees, nut or fruit trees, or anything you do not want cut by mistake.

Cut the rounds square so they stack stably. A round cut at an angle will sit crooked and may tip as the wood ages. As a starting range, many suppliers describe totem rounds as roughly 6 to 12 inches in diameter and 6 to 12 inches tall. Exact dimensions can vary with the tree, the species, and the supplier’s method, so treat those numbers as a guide rather than a rule.

Inoculate promptly. Our general preference is to inoculate within about one to two weeks of cutting, while following the spawn supplier’s timing for the species and strain you chose. A short resting period is fine; a long delay gives wild fungi more time to move in first.

Until you build the totem, keep the rounds shaded, off bare soil, and protected from drying wind. Do not leave them sitting in standing water or sealed in plastic.

For the full background on selecting and handling trees, see our guide to choosing and cutting trees for mushroom logs.

Gather the supplies before you start cutting rounds:

• Sawdust spawn of a compatible species and strain
• Fresh, healthy hardwood rounds with intact bark
• A chainsaw for cutting rounds to size
• Chainsaw safety gear: chaps, eye and hearing protection, gloves, and sturdy boots
• A stable, level work surface for stacking
• A bag or other breathable, humidity-retaining cover
• A thin wood slice or a few layers of clean paper to cap the top
• A rubber band, twine, or tape to close the cover loosely
• A durable label and permanent marker

Sawdust spawn is the straightforward default for this guide because it spreads easily across a cut face. Grain spawn appears in some supplier methods, and it can work, but sawdust spawn is the common starting point for layering between rounds.

Plug spawn — small wooden dowels colonized by mycelium — is designed to fit into drilled holes. It is not the default for layering across flat cut faces, so it is not the spawn this guide recommends for a totem.

Tree felling and chainsaw work can go wrong quickly. If a tree is leaning, damaged, near a structure or power line, or beyond your experience, bring in someone qualified. No mushroom harvest is worth taking chances over.

If possible, build the totem where it will incubate. A finished stack of heavy rounds is much easier to leave in place than to move.

1. Set the bag or cover on a stable, shaded surface and open it flat. If your method places a base layer of spawn at the bottom, spread a thin pancake of sawdust spawn inside the bag first.
2. Stand the first round squarely on that base, cut face up. Make sure it sits level.
3. Spread a thin, even layer of sawdust spawn across the exposed cut face — roughly 1/8 to 1/4 inch deep is a common starting point. Cover the full face rather than dropping one clump in the center.
4. Place the second round on top, cut face down, so the spawn is sandwiched between the two fresh cut faces. Press it down gently for good contact.
5. Spread another thin layer of spawn on the new top face, then add the third round if your stack uses one. Add a third round only if the stack remains stable and the cover can close around it.
6. Cap the top cut face with a thin wood slice or several layers of clean paper to slow drying and protect the exposed wood.
7. Pull the cover up around the stack and close it loosely with a rubber band, twine, or tape. Leave a small opening or use a breathable material so a little air can exchange.
8. Label the totem with the mushroom species, strain, tree species, and date.

Good contact between the spawn and the fresh cut faces matters more than the exact thickness of the layer. The mycelium needs to touch live sapwood to grow into it.

More spawn is not a substitute for compatible wood or properly moist rounds. A thick layer of spawn on the wrong species, or on wood that has already dried out, will not rescue the grow. Match the strain to the wood, keep the rounds fresh, and spread the spawn evenly.

After the totem is built, it enters colonization. The mycelium grows out of the spawn layers and into the rounds above and below them.

Place the stack somewhere:

• Shaded through the day and protected from drying wind
• Out of direct sun, which can overheat a covered stack
• Kept at a temperature appropriate for the species and strain
• Safe from being knocked over by animals, foot traffic, or wind

The cover holds humidity around the cut faces while the mycelium establishes itself. Do not seal it airtight. Trapped heat, stagnant air, and constantly wet surfaces can encourage the wrong organisms instead of your mushroom.

Black plastic in particular can absorb sunlight and overheat a stack. If you use plastic, keep it in deep shade and check that the stack is not building heat. Breathable paper or cardboard alternatives can work, but they dry out faster and need more monitoring during dry weather.

A common initial incubation is roughly 4 to 6 months before the cover comes off, but this is a useful range, not a fixed schedule. Temperature, species, wood, round size, strain, and climate all change the timing. Let the supplier’s guidance for your strain control, and look for visible signs of colonization before unwrapping.

For the broader principles of stacking, shading, and watering colonizing logs, see our aftercare guide.

Once the totem shows solid colonization — visible mycelium at the interfaces and firm, knitted-together rounds — remove the cover and move the stack into fruiting conditions.

Stand it upright outdoors in deep shade, where it receives rainfall but is sheltered from harsh drying wind. The wood should stay moist without being waterlogged. During a dry spell, slow, deep watering that thoroughly wets the wood is more useful than a light daily mist.

After that, watch the totem after rain and during seasonal temperature changes. Mushrooms often appear in response to moisture and a shift in temperature, so those moments are when a colonized totem is most likely to fruit.

Timing varies widely. Oyster may fruit earlier than lion’s mane or shiitake. Some totems produce within months; others take more than a year, and some fail to fruit at all. A slow totem is not necessarily a failed one, but a totem that never colonized properly will not produce no matter how long you wait.

If you are weighing totems against other outdoor log methods, our guided pathway for growing mushrooms on logs walks through the choice.

During incubation, white or pale mycelium appearing at the spawn layers and the end grain is encouraging. Over time, the spawn layers help knit the rounds together, and a well-colonized totem may feel firmer when you gently test it.

Healthy colonization can be uneven. One face may fill in faster than another, and the surface of the wood may develop lichens, algae, or minor discoloration that is harmless. Outdoor wood is not sterile, and a few unfamiliar marks on the bark do not automatically mean the grow is lost.

Be more cautious if you see:

• Green, black, orange, or pink mold growth
• Wood that becomes soft, light, or slimy rather than firm
• A stack that stays constantly wet with no airflow
• Large areas of bark separating from the wood

Never intentionally smell questionable material to check it. If a totem looks badly contaminated, separating it from the others and watching it is usually a better response than trying to rescue it. One problem stack is not a reason to discard a whole batch.

Most totem problems begin before any mushrooms appear. Watch for:

• Pairing a mushroom strain with wood it cannot digest
• Using rounds that are already dry or have lost their bark
• Leaving poor contact between the spawn and the cut faces
• Building a stack that is unstable or top-heavy
• Sealing the cover airtight during incubation
• Overheating the stack with plastic in the sun
• Unwrapping the totem before it has colonized
• Letting the fruiting site dry out for long stretches
• Expecting mushrooms within a few weeks

One last point matters as much as any of the above. An inoculated totem can produce mushrooms other than the species you intended. Never eat a mushroom solely because it appeared on a totem you built. Identify every harvest using the mushroom’s full set of characteristics, and if you are not certain, do not eat it.

Choose a compatible mushroom strain and hardwood. Cut fresh, healthy rounds roughly 6 to 12 inches across and 6 to 12 inches tall. Stack two or three rounds upright with a thin, even layer of sawdust spawn between each pair of cut faces. Cap the top, close a breathable cover loosely around the stack, and label it.

Incubate in shade, humid but not airtight, for several months or until the rounds are colonized. Then remove the cover, keep the wood moist in deep shade, and watch after rain and seasonal changes.

Be patient, observe carefully, and identify every mushroom before you eat it. The principles are simple; the timing belongs to the mycelium.

These are sources and next reading, not endorsements or affiliate links.

• Cornell Small Farms: Outdoor Mushroom Production
• Field & Forest Products: Oyster Log Instructions
• Field & Forest Products: Lion’s Mane Log Instructions
• Field & Forest Products: Shiitake Totem Method