How to grow mushrooms on logs (2024)

Published: Monday, 3 June 2019 at 9:26 am

Find out how to grow your own crop of delicious mushrooms using a kit, in our step-by-step practical guide.

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Growing your own mushrooms is easy. There are several different types of mushroom to grow, from sh*take and oyster to plan white mushrooms. Some mushrooms can be grown in a straw mix while others are supplied as dowels which you drill into logs.

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To get started, choose the type of mushrooms you want to grow and then order a growing kit online. This growing kit involves using hardwood logs and small wooden dowels which have been impregnated with sh*take mushroom fungus.

Grow mushrooms in freshly cut, hardwood logs, with clean, intact bark. Remove any branches. Using a 9 or 10mm drill bit, drill holes every 15cm along the length of the logs. Tap dowels into the drilled holes, making sure they're flush with the surface of the bark. Seal the holes with wax and wrap the logs in plastic to stop them drying out. You should be harvesting your home-grown mushrooms within six months.

Follow our step-by-step guide to growing mushrooms in logs, below.

You Will Need

  • Mushroom-growing kit, comprising dowels, wax and wax applicator
  • Fresh logs - preferably hardwood
  • Hammer
  • Drill with 9mm or 10mm bit
  • Camping stove (if not near to a domestic cooker)
  • Pan for heating the wax

Total time: 1 hour

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Step 1

How to grow mushrooms on logs (1)

Choose logs that are preferably 30cm or more in diameter and are freshly cut (or have been cut no more than six weeks ago). They must also have their bark intact, as this provides part of the habitat. Drill 32mm-deep holes into the logs - one for each dowel - spaced 15-20cm apart.

Step 2

How to grow mushrooms on logs (2)

Lightly hammer the dowels into the drilled holes, ensuring they're flush with the surface and also in close contact with the surrounding wood so the spores grow into the log. If the dowels wobble, they're not tight enough in the hole.

Step 3

How to grow mushrooms on logs (3)

Melt the wax in a pan, then use a foam brush or cotton dauber to apply the hot liquid to seal each dowel in place. Take care to completely cover the end of each dowel and create a tight seal that won't fall off - this prevents other fungi from entering each hole.

Step 4

How to grow mushrooms on logs (4)

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Wrap your inoculated logs lightly in plastic and leave in a cool, shady place for 8-12 weeks. Remove the plastic, then stack the logs in damp shade. Mushrooms should appear in autumn and spring after 6-18 months, and on larger logs they can return every few months for up to five years.

How to grow mushrooms on logs (2024)

FAQs

How long does it take to grow mushrooms on a log? ›

Most mushrooms on standard size logs in temperate climates will take about a year to fully colonize before they fruit. This can vary between 6 months to two years. Smaller diameter logs and soft hardwoods will typically fruit sooner, though they'll have less longevity.

How do you start a mushroom on a log? ›

You make a hole in the soil (log), you plant the seed (plug spawn) and you seal the hole over (with wax instead of soil). Given the right conditions (shade instead of sunlight) and good moisture, the roots (mycellium) will search out nutrients and when the plant (fungus) is ready, it will set fruit (mushrooms).

What are the easiest mushrooms to grow on logs? ›

Shiitake mushrooms are easy to grow thanks to their ability to be grown both indoors and outdoors, making them ideal for different set-ups. If you have room outdoors, they can be grown on logs kept in a shady place and will continue to fruit for years after their first flush.

How often should I water mushroom logs? ›

Exactly how often and how long your log produces mushrooms depends greatly on its size and specific growing conditions.
  1. Step 1, Place: Find a consistently shady and wind-sheltered spot outside to store your log. ...
  2. Step 2, Water: Thoroughly water your log once a week during periods of no rainfall.

Where is the best place to put mushroom logs? ›

Oyster mushroom logs are the perfect addition to any garden. The main requirement is a fully shaded area, or an area that receives only dappled sunlight.

How many mushroom plugs per log? ›

log usually is given about 40 - 50 plugs. The more plugs you use per log, the faster the wood will be colonized with mushroom mycelium. A large stump usually requires 100 holes arranged in a similar hexagonal fashion around the trunk and with holes on the top of the stump as well.

Can I inoculate logs in winter? ›

Research at Cornell's Arnot Forest has shown that winter and spring inoculations are ideal; however, summer and fall inoculations also produce sizable harvests. Logs can be inoculated immediately after they are felled; there is no need to “cure” the log for a few weeks.

Do mushroom logs need light? ›

Find a nice shady spot in your yard for your mushroom log that is out of direct sunlight. You can lean the log against a shady fence or a tree. The end of the log should be elevated off the ground a few inches.

What logs are best to inoculate mushrooms? ›

Oaks and hard maples are the preferred wood-types for most mushroom species because they're very dense and offer plenty of nutrition for a longer, sustained fruiting period.

When to cut logs for mushrooms? ›

Healthy, living trees can be felled for mushroom bolts nearly any time of year, though to maximize yield and longevity you can time harvest with sap flow. Traditionally, log cutting and inoculation happen in late winter and early spring before bud swell.

Do mushrooms come back every year? ›

The fungus will continue to grow and persist as long as there is plenty of organic matter to feed upon. Mushrooms will emerge again as soon as the growing conditions are right, which may not be for another year.

Can you use pine logs for mushrooms? ›

Soft Hardwoods: We do not recommend using aspen or other soft hardwoods. These species might be appropriate for other types of mushroom production, such as oysters. Evergreen Species: Do not use wood from any coniferous evergreen tree (pine, spruce, hemlock, etc.).

How much mushrooms per log yield? ›

A typical 3 foot log should produce 2-3 lbs. of mushrooms every fruiting, or 1 pound per linear foot.

How fast can you grow mushrooms? ›

It takes about three weeks to produce the first mushrooms for harvest. Throughout the growing period, mushroom farmers play Mother Nature, manipulating water, airflow, temperature fluctuation and more.

How long does it take for mushrooms to grow on trees? ›

Mushrooms can take anywhere from a few days to several weeks to grow on a tree. The exact time frame depends on various factors like the type of mushroom, environmental conditions, and the health of the tree. Moisture, temperature, and availability of nutrients play crucial roles in the growth process.

Can you grow mushrooms on dead wood? ›

Many mushroom species are suitable for cultivation on fresh wood. The easiest to cultivate are shiitake and oyster mushroom, as they are less demanding species. Still, it is possible to cultivate most mushrooms that naturally grow on wood – tree stumps, trunks of dying or dead trees, branches, etc.

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