Drill, Plug, Wax, Wait: 6 Straightforward Steps to Growing Mushrooms Outdoors
Mushrooms: They are versatile, delicious, and incredibly simple to grow in your yard or garden.
We have a mushroom growing method that is so uncomplicated that you have no excuse not to try it. All you need is a log or tree stump, some mushrooms and a few basic tools. And you will be on your way to producing mushrooms for many years to come!
The following excerpt is from Organic mushroom cultivation and mycoremediation By Cotter said. It has been adapted for operate on the Internet.
Growing mushrooms in logs and stumps
If using a plug, match the depth and diameter of the holes to the candles. If you are using sawdust spawn, you may need a slightly larger diameter, depending on the tool you operate to insert the sawdust.
People have been growing mushrooms on logs and stumps for hundreds, perhaps thousands of years. This is one of the easiest ways to grow edible and medicinal wild mushrooms such as shiitake, maitake and oysters. In fact, some mushrooms, such as maitake, are easier to grow outdoors in natural conditions than indoors.
Growing logs and stumps outdoors is generally low-tech, but practiced on a immense scale this requires a lot of initial work to install logs or stumps. For this reason, the log-grown mushroom industry has grown more rapidly in countries where labor is ample and inexpensive and the technologies required for indoor cultivation are narrow.
In general, I do not recommend growing logs and stumps outdoors for commercial enterprises. It is better suited for home and hobby cultivation or as an additional income for a tiny commercial enterprise.
Stumps vs. logs: where to start
Growing mushrooms on stumps is similar to growing mushrooms on logs, although if you are a beginner, I recommend starting with logs as the stumps can bear fruit for many years. (Once they begin to bear fruit, they can bear fruit for a decade or more.) You operate the same spawning techniques such as drilling and doweling or sawdust spawn.
The main difference is that you plug up as much of the evident bark that remains above the ground as possible, and also create an outer ring of the upper, cut surface of the trunk. Many mushrooms, such as maitake, chicken of the woods, reishis, enoki, oysters and beefsteaks, benefit from growing from stumps rather than logs.
Growing mushrooms outdoors: a step-by-step process
Step 1 Cut the logs into lengths that are simple to handle and move. The most common lengths are 2 to 4 feet, depending on how much weight you or the people helping you can carry. And aim for a diameter of 6 to 10 inches. Since you often harvest these logs, choose the size that best suits your strength and skills.
Employ a diamond drilling pattern across the entire debarked surface of the log. Smaller spacing will speed up colonization, but I suggest spacing the holes 4 to 6 inches apart.
Step 2. You will then need to drill holes into the log at regular intervals to a depth of about 1 to 11/2 inches. Most plugs on the market require a 5/16-inch drill bit, although this may vary; simply match the drill bit to the dowels you are using. If you are using sawdust spawn, match your drill bit to the size of the packing tool you are using.
If you’re grafting a immense number of logs, it’s worth investing in a high-speed drill bit attached to your angle grinder with an adapter. The higher RPM and speed make drilling logs effortless compared to a regular electric drill.
Drill diamond-shaped holes around the bark-covered wood surface, spacing the holes about 4 to 6 inches apart. Drilling and spawning more holes will not produce more mushrooms, but it will speed up the colonization process for earlier fruiting. I don’t recommend placing the holes more than 6 inches apart, otherwise you will raise the risk of attracting spores of competing mushrooms. This won’t “harm” the mycelium you’ve grown, but it will reduce your yield by taking away valuable real estate from your culture.
Touch the plug gently. Watch those fingers!
Step 3 Insert the spawn into each hole by tapping with a hammer if using dowels or tapping with a dowel if using sawdust. Fill the hole until the spawn is flush with the bark. Brush a tiny amount of melted wax over the spawn hole to seal the spawn. The wax helps keep the hole saturated by supporting the mycelium as it drills out from the sawdust or plugs the walls of freshly drilled holes.
Some growers also wax the ends of the logs to retain moisture, but this can also lock it in. Another option is to wax one end and not the other, which will allow moisture to escape from the unwaxed side in the event of rain, overnight soaking, or contact with damp surfaces.
Coat the plug with wax to retain moisture and prevent dirt and insects from entering. This gives the mycelium enough time to enter the cavity and begin colonization.
Step 4 Place the logs in a shady area with dappled forest lithe, or on the shaded side of a building if you are in an urban environment. Place them near a water source so that they are simple to water and soak when needed.
The colonization phase can last from six to ten months, depending on the type of wood, temperature and spawning interval. Visit the logs periodically—at least once a month for the first six months. The applied wax may fade or crack and fall off, which is fine because the mycelium really only needs a few weeks of protection after spawning.
Arid conditions can leisurely colonization, so water the pile lightly once a week to keep it saturated if it hasn’t rained. Lift a few logs to feel the weight; if they are extremely dehydrated and appear much paler than when they spawned, you can soak them overnight in water – but no longer than twenty-four hours, otherwise the mycelium may drown.
Submerge the logs in water in a garbage can, a immense plastic bag, or a affordable kiddie pool. Employ other logs or bricks to weigh down the logs, keeping them completely submerged.
Another alternative is to lightly moisten them for a week or more to allow the logs to gradually absorb moisture. However, this option may waste water.
Step 5 About six months after inoculation, start checking the ends of the log once a week for signs of mycelium, such as white streaks on the surface of an open cut, which signals that the mycelium is nearing full colonization and will soon be able to fruit. Optimum humidity is now more crucial than ever to ensure that the mycelium is able to supply the growing mushrooms through all stages of establishment and fruiting.
At this point, as the mycelium in the logs approaches complete colonization, the stacked logs may begin to come together.
Place the logs in a shaded area for colonization. I keep them tightly packed together to retain moisture while colonizing, then re-arrange them log cabin style outdoors when they show signs of fruiting.
Soak them overnight in water, then spread them out in the form of a “log house” or lean them against the trunks of live trees, forming a circle so that one end rests on the ground and the other rests against the tree.
Step 6 Finally, your mushrooms will begin to bear fruit. The logs will bear fruit two or three times a year, usually for as many years as they are in diameter, with an interval of several weeks between each flush.
Mushrooms may fruit near where you placed the spawn in the first flush because it is an simple escape, but they can also fruit from almost anywhere on the entire bark surface.
When you see teenage shiitake mushrooms splitting the bark and looking like gloomy brown or black buttons, mist them as much as possible; several times a day is ideal.
For commercial log production, a sprinkler system is preferred. You can also simply place logs near your house and spray them in the morning and evening as you pass them.
If the logs are in contact with the ground, check the area frequently as they may point the fruiting bodies downward in search of water. Once the mushrooms are ripe, it’s time to harvest!
Keep records of flushing patterns and establish a watering schedule consistent with those patterns; not only will this raise your yield, but it will also improve your knowledge of the mushrooms you are growing. Once the mushrooms are colonized and ready to fruit, they will wait for enough water to allow fruiting. Schedule watering so that the mushrooms have had enough rest and are fully charged to benefit from watering; this will ensure optimal fruiting with every flush.