If “shiitake foraging” caught your eye on a list of things to do in Oita, you may be picturing a walk in the woods with a basket and some luck. It’s more interesting than that. You spend a morning on a working farm in Kusu, a farming town in the hills of rural Kyushu, and every mushroom you pick sat inside an oak log for two years before you got there. We run this shiitake mushroom foraging tour with a local farm each spring and autumn. This is the fuller picture: what makes log-grown shiitake different, why the season and the hours are what they are, and how to get there without a car.
Log-Grown vs. Sawdust-Grown: Why the Two-Year Wait Matters
Shiitake are grown commercially in two ways, and they don’t produce the same mushroom.
The faster way is kinsho (sawdust-block) cultivation. Spawn goes into packed blocks of sawdust and nutrients, the blocks sit indoors in controlled conditions, and mushrooms appear in a fraction of the time. It’s efficient and consistent, and it’s how most people outside Japan have eaten fresh shiitake, whether they knew it or not.
The slower way is log cultivation, and it’s what you’ll see in Kusu. A kunugi (sawtooth oak) is felled and cut into lengths. Each length is drilled and plugged with spawn, and the logs, called hodagi, are stacked so the fungus can work its way through the wood. Then they’re stood up in the shade of the forest, in the hodaba (log yard), to fruit in conditions close to how shiitake grow in the wild. On the farm we visit, it takes two years from cutting the oak to the first mushroom.
What that patience buys you isn’t a guaranteed better-tasting mushroom — flavor and texture have as much to do with the strain as the method, and we won’t claim otherwise. What it does buy you is a genuinely low-intervention way of growing food: the log supplies its own nutrients, and rain and forest humidity supply the water. Nothing else goes in. It’s about as close to organic as shiitake cultivation gets, which is the part we think is worth understanding, more than any claim about which mushroom wins on a plate.
Oita has a long relationship with this method. You may also have read about the Kunisaki Peninsula and Usa area in the prefecture’s northeast, where log-grown shiitake farming is recognized by the UN’s Food and Agriculture Organization as a Globally Important Agricultural Heritage System (GIAHS). That’s a different part of Oita. The farm we visit is inland in Kusu, and we don’t want to blur the two.
What the Morning Actually Looks Like
| Meeting point | JR Bungomori Station (Kusu), 10:00 |
| Duration | About 3 hours; back at the station around 1 p.m. |
| Group size | Up to 8 guests |
| Price | ¥15,000 per person |
| Season | Typically spring (March–May) and autumn (October–November); the exact window shifts with how the mushrooms are growing that year, so ask us for current dates |
| Pickup from Yufuin | Available on request |
We pick you up at Bungomori Station, and the first stop is a supermarket. That may sound like filler, but it’s there on purpose: the mushroom shelf in an ordinary Japanese grocery store is a good introduction to how many kinds of mushroom Japanese households cook with, and it’s useful context before you see where one of them comes from.
Then it’s on to the farm, one of the larger shiitake farms in Oita. We don’t publish its name or location. It’s a working farm, not a visitor attraction, and we’d like to keep it that way. The hodaba is the first thing you see: hundreds of thousands of oak logs lined up under the trees, far more than most people imagine when they hear “mushroom farm.” The farmer walks you through how it’s done, from felling to inoculation to the long wait. Then you go into the forest and pick shiitake straight off the logs yourself. The morning ends with a barbecue lunch with the farmer, eating what you picked.
After guiding this morning many times, we’ve noticed that the moment people remember is rarely a single “wow.” It’s three things adding up. One is how varied the world of fungi turns out to be, starting at that supermarket shelf. Another is the sheer labor behind each log. Every one was cut, drilled, inoculated, and stacked, then left for two years before it produced anything, and most guests are surprised by that number. The last is simply seeing how people in rural Kusu live and work, which isn’t something a standard sightseeing day shows you.
Picked, Then Grilled: Why Fresh Log-Grown Shiitake Surprise People
A lot of travelers know shiitake mainly in dried form: the shriveled caps you soak before adding to soups and stir-fries, or the intense, savory backbone they give Japanese stock. Dried shiitake is a great ingredient, but it’s a concentrated flavor, and the drying changes the texture completely.
A shiitake picked that morning and grilled soon after isn’t much like that. The flavor is earthy and immediate, and eating something within the hour of picking it changes the experience more than the growing method does on its own. On the farm, the time between picking a mushroom and eating it is about as short as it can be, and that’s something you can’t reproduce with a store-bought mushroom, log-grown or not.
This is also the part of the morning where the two-year story comes back around. Once you’ve seen the log yard and heard how long each log takes to produce anything, a single grilled mushroom feels less like a side dish and more like the end of a long process you now understand.
Why Only Spring and Autumn, and Why Only Mornings
The season. The tour typically runs in spring (March–May) and autumn (October–November), but the exact window isn’t fixed on a calendar. It moves with how the mushrooms are actually growing that year, and some years the farm can accommodate a visit a little outside the usual months. Even within a typical window, the actual dates depend on the farmer’s schedule. If you’re planning around this morning, don’t just build the trip first and hope a date fits — ask us for current dates. Outside a reasonable range around spring and autumn it generally isn’t available, and we’d rather you know that now than find out in June.
The hours. The default is a morning, 10:00 to about 1 p.m., and people sometimes ask why we don’t offer an afternoon slot. The honest answer is that the hours are set by the farmer, not by us. This is a working farm, and the time the family can give to visitors fits around their own day, not ours. That said, it isn’t an absolute rule — ask us if a morning genuinely doesn’t work for your itinerary, and we’ll check whether the farm can make an exception, the same as we do with the season above.
We think that’s the right way round. The people who open their land to our guests are partners, not a backdrop. A visit that suits the guest but disrupts the host isn’t one we want to run. Travel works best for us as a two-way street, and on this morning that means the farm’s calendar comes first and ours fits around it.
The upside is that your afternoon is free. Bungomori Roundhouse, a 1934 fan-shaped locomotive shed that still carries wartime strafing marks, is about five minutes’ walk from the station where the tour ends. If you want to string together a whole day in Kusu, we’ve mapped one out in our 5-day Oita itinerary.
Where Beppu still wins as a base: it has far more beds across far more price points, more frequent trains, more choice about dinner, and a shuttle to the cruise terminal. If you’re moving on public transport, or arriving or leaving by ship, Beppu is the more practical home — and Yufuin is close enough to reach on a day out from it. That trade-off is real, and we wouldn’t argue you out of it.
Getting to JR Bungomori Station
Most of rural Kusu really does need a car. Jion Falls, the Kirikabu-yama plateau, and the farming valleys around town are spread out, and buses between them are sparse. That’s usually our first warning to anyone planning this area.
This tour is the exception, and it’s worth saying plainly because it’s unusual for this part of Oita. It meets at JR Bungomori Station and handles all the driving from there, so you can do the whole morning without a car.
Bungomori sits on the JR Kyudai Main Line, the railway that runs across inland Oita between Hita and Yufuin toward Oita city. Trains on this stretch aren’t frequent, so work backward from the 10:00 meeting time and check the current timetable before you commit. Arriving with twenty minutes to spare is better than arriving with two.
If you’re staying in Yufuin, Bungomori is about 30 minutes by car, and pickup from Yufuin can be arranged on request, which is often simpler than matching a train to the meeting time.
Coming straight from Fukuoka, both the *Yufu* and *Yufuin no Mori* limited expresses out of Hakata stop at Bungomori Station, so you can ride straight in without changing trains. It’s a longer morning than starting from Yufuin, so build in a buffer rather than cutting it close.
Beppu doesn’t sit on this line at all, so there’s no simple train option from there. Driving is the practical route, or ask us about a pickup — the same as we can arrange from Yufuin.
After the tour, the roundhouse is walkable from the station. Anything beyond it, including the falls and Kirikabu-yama, is back in car territory.
Ready to Pick Your Own in Kusu?
If you’d like to see where Oita’s shiitake actually come from, and eat them within the hour, our Oita Shiitake Mushroom Farm Tour & Tasting is a small-group morning on a working farm, with the farmer, in the forest, and at the grill. It’s an authentic slice of rural Kyushu that doesn’t need a car to reach, and one of the most immersive three hours we know of in Oita. Spring and autumn dates fill around the farm’s calendar, so tell us when you’re coming and we’ll find the morning that works.
Frequently Asked Questions
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Can you go shiitake foraging in Oita year-round?
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Not quite. Our tour typically runs in spring (March–May) and autumn (October–November), but the exact window depends on how the mushrooms are growing that year, and specific dates depend on the farmer’s schedule too — some years we can accommodate a visit a little outside the usual months, so it’s worth asking rather than assuming. In summer and deep winter it generally isn’t available, so if the foraging is a priority, ask us early rather than building the trip first.
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How long does it take to grow shiitake mushrooms on logs?
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On the farm we visit, it takes two years from felling the oak and inoculating the logs to the first harvest. That long wait, and the labor that goes into each log along the way, is the main reason log-grown shiitake cost more and are more highly prized than sawdust-grown ones.
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What is the difference between log-grown and sawdust-grown shiitake?
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Sawdust-grown (kinsho) shiitake are cultivated indoors on blocks of sawdust and added nutrients, which is faster and more controllable. Log-grown shiitake fruit from oak logs in the forest over a much longer cycle, fed by nothing but the wood itself and rain — no added nutrients. We won’t claim log-grown always tastes better, since that comes down to the strain as much as the method, but it is the more natural, low-intervention way to grow the mushroom.
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Can you visit a shiitake farm in Japan without a tour?
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Some pick-your-own mushroom farms near Tokyo, around Yokohama and in Chiba for example, welcome independent visitors. The Oita farm we work with isn’t a public attraction, and visits there happen as part of our tour and on the farmer’s schedule. We can’t speak for every farm in Oita, but don’t count on turning up at a working farm unannounced.
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Is the shiitake farm tour good for kids?
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Yes. Children are welcome, and there’s no age restriction to worry about. Picking mushrooms off a log and then eating them at a barbecue tends to suit younger travelers well. Just dress everyone for walking in a forest.
