
Oyster mushrooms are a favourite for beginners due to their resilience, rapid growth, and ability to grow almost anywhere on just about anything. They are also packed with nutrients, including fibre, vitamins, minerals, and key nutrients, while being low in carbohydrates and fat. With the right setup and equipment, you can grow oyster mushrooms for the same cost as a few supermarket portions. You can grow them indoors using kits or buckets, or even on old books!
| Characteristics | Values |
|---|---|
| Difficulty level | Beginner-friendly |
| Yield | 750g |
| Cost | $20 per kit |
| Growing conditions | Optimal temperature, humidity and airflow |
| Containers | Buckets, plastic log bags, jars |
| Substrate | Straw, wood chips, coffee grounds, manure, sawdust, wood pellets |
| Maintenance | Simple misting of mushrooms and growing environment |
| Health benefits | Fibre, vitamins, minerals, antioxidants, low cholesterol, regulates blood pressure |
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What You'll Learn

Oyster mushrooms are easy to grow
If you're new to mushroom growing, it is recommended to start with an oyster mushroom growing kit as they provide everything you need to get started, including detailed instructions. These kits can be purchased from companies like Fungi Perfecti. However, growing oysters from scratch allows you to benefit from their resilience, as you will have to cultivate the mycelium yourself. Oyster mushroom spawn is easy to find and work with, and has a high chance of success compared to other species.
Oyster mushrooms can be grown indoors or outdoors, in containers or buckets, and on a wide variety of substrates, including straw, wood chips, coffee grounds, and even old books. The bucket technique is a reliable, beginner-friendly method that can be easily scaled up. To grow oyster mushrooms using this technique, you will need to source and prepare buckets, pasteurize your substrate, inoculate, and incubate your buckets with mushroom spawn. You can purchase pre-made bucket kits or drill holes in a diamond pattern in a bucket yourself to allow the mushrooms to fruit without drying out the substrate.
Once your mushrooms are out of incubation, the only maintenance required is a simple misting of the mushrooms and their growing environment a few times a day. With the proper setup and equipment, you will be able to grow flush after flush for a low cost.
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Optimal conditions for growth
Oyster mushrooms are a favourite for beginners due to their resilience, rapid growth, and ability to grow almost anywhere on just about anything. They are also known for their nutritional and medicinal properties.
Temperature
Oyster mushrooms grow best within a specific temperature range. However, the optimal temperature may vary slightly depending on the particular oyster mushroom strain. Generally, a temperature of around 70°F (21°C) is suitable for their growth.
Humidity
Maintaining optimal humidity levels is crucial for successful oyster mushroom cultivation. Too little humidity can hinder mushroom growth, while excessive humidity can lead to moisture-related issues.
Airflow
Proper airflow is essential to prevent the mushroom caps from becoming too small. Good airflow can help regulate the environment, ensuring the mushrooms receive adequate oxygen and preventing the buildup of excessive moisture.
Substrate
Oyster mushrooms can grow on various substrates, including straw, wood chips, sawdust, wood pellets, and even coffee grounds. Straw is a popular and inexpensive choice, easily available from farm supply and home improvement stores. Chopping or shredding the straw can facilitate easier colonisation.
Container
Containers, such as buckets, provide a suitable environment for growing oyster mushrooms. The "bucket tek" technique is a reliable and beginner-friendly method that allows for quick growth and easy scalability. Drilling holes in the buckets ensures proper ventilation and fruit development without drying out the substrate.
Maintenance
Once the mushrooms are out of incubation, maintenance is straightforward. A simple misting routine of a few sprays with a water bottle daily will suffice to maintain the necessary moisture levels.
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Using a kit or growing from scratch
Oyster mushrooms are one of the easiest varieties of mushrooms to grow and are known for their resilience, fast growth, and ability to grow almost anywhere. They require some light, but not direct sunlight, and plenty of oxygen. They also need good airflow to prevent big stems and small caps.
Using a kit
Mushroom growing kits provide everything you need to get started, making them perfect for beginners. They typically include a heat-resistant growing bag, a straw-based substrate, fresh mushroom spawn, a growing environment, and detailed instructions. Kits are a good option if you want to learn about mushroom cultivation without having to source all the materials yourself.
To use a kit, simply follow the provided instructions. Most kits will recommend placing the kit in an area with indirect light and good airflow, such as a kitchen counter or bathroom. Mushrooms will begin to emerge in about 2-5 days and will be ready to harvest in approximately 7-10 days.
Growing from scratch
If you want to grow oyster mushrooms from scratch, you will need to source your own materials and follow a few key steps. First, decide what type of oyster mushroom you want to grow, as different varieties have different temperature and growing requirements. Some common types include:
- Pearl oyster mushroom: Grows best in colder temperatures
- Blue oyster mushroom: Grows in cooler temperatures and is one of the fastest colonizers
- Phoenix oyster mushroom: Grows in warmer climates and is also known as the summer oyster mushroom
- Golden oyster mushroom: Prefers warmer temperatures and is known for its yellow colour
Next, you will need to gather your materials. You will need a growing container, such as a purpose-made mushroom cultivation bag, a bucket, or a large freezer bag with holes poked in it. You will also need a substrate, which serves as the food source for the mushrooms. Straw is the most widely used substrate, but sawdust, cardboard, coffee grounds, and other agricultural byproducts can also be used.
Once you have your materials, follow these steps:
- Prepare your substrate by hydrating it and placing it in your growing container.
- Maintain the humidity in the growing environment by spraying with water twice a day.
- Provide indirect light and good airflow to the growing mushrooms.
- Harvest the mushrooms when they are ready, typically within 7-10 days of emerging.
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Maintenance and harvesting
Oyster mushrooms are a great choice for beginners due to their resilience, rapid growth, and ability to grow almost anywhere. They are also known for their nutritional and medicinal properties.
Once your mushrooms are out of incubation, the only maintenance routine you need to follow is a simple misting of your mushrooms and their growing environment. A few sprays with a water bottle a day will do the trick.
Oyster mushrooms require good airflow, or you will end up with large stems and small caps. Optimal conditions include optimal temperature, humidity, and airflow. A temperature of 70°F/21°C is recommended.
To harvest your oyster mushrooms, you can either cut the whole cluster off or pick individual mushrooms. If you want additional flushes, it is recommended to cut the whole cluster instead of picking single mushrooms.
Oyster mushrooms can be grown in a variety of containers and substrates. One popular method is the bucket tek, which is a quick, predictable, and beginner-friendly technique. You can source and prepare buckets, pasteurize your substrate, inoculate, and incubate your buckets with mushroom spawn. Drill holes in a diamond pattern to allow the mushrooms to fruit without drying out the substrate.
You can also grow oyster mushrooms indoors using plastic log bags with wheat straw and hardwood pellets as the substrate. Another option is to use a 5-gallon bucket with wood chips, pasteurized straw, or other substrates such as manure, sawdust, or coffee grounds.
If you are a beginner, it is recommended to start with a growing kit, which provides detailed instructions for cultivating oyster mushrooms. These kits can be purchased from companies like Fungi Perfecti, which offers quality kits with instructions for beginners.
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Health benefits
Oyster mushrooms are neither plant nor animal; they are a type of fungus. They are low in calories and rich in vitamins, minerals, and antioxidants. They also contain fibre and protein. All types of oyster mushrooms are edible and are commonly enjoyed in dishes like pasta and stir-fries.
Oyster mushrooms have been used in traditional medicine for centuries, and they are prized for their culinary uses. They can be added to soups and stews, cooked and added to pasta and grain dishes, sautéed with olive oil and garlic, chopped and added to sauces and gravy, grilled on skewers with vegetables, or roasted in the oven.
Heart Health
Oyster mushrooms are known to promote heart health by reducing risk factors like high cholesterol and high blood pressure. Beta-glucans, a type of fibre found in oyster mushrooms, are fermented by gut bacteria to produce short-chain fatty acids that can help reduce cholesterol production in the body. In addition, oyster mushrooms are a good source of vitamin B3, which helps to maintain healthy cholesterol levels and lower the risk of atherosclerosis.
Blood Sugar Regulation
Some studies have found that regularly consuming oyster mushrooms may help regulate blood sugar levels. One study showed that eating 150 grams of oyster mushrooms three times a day for seven days reduced fasting blood sugar levels by about 22% in hospitalized patients with type 2 diabetes. Another study found that taking a mixture of powdered mushrooms in water for 14 days reduced fasting blood sugar levels by 6% in healthy participants.
Immune Health
Oyster mushrooms are packed with antioxidants and other compounds that can help protect the body's cells from free radical damage and oxidative stress. They are a good source of vitamin B3, which is crucial for the growth and function of organs in the body and can aid in the breakdown of lipids, carbs, and proteins. Oyster mushrooms also contain ergothioneine, an amino acid with potent antioxidant effects that can lower the risk of developing chronic diseases like heart disease, diabetes, and cancer.
Gut Health
Oyster mushrooms are a source of dietary fibre, which can promote gut health and support the growth of beneficial bacteria in the digestive tract. A 2021 rodent study found that supplementing the diet of obese rats with oyster mushrooms decreased the growth of harmful bacteria and increased the production of beneficial short-chain fatty acids in their guts.
Anti-inflammatory Effects
Oyster mushrooms contain anti-inflammatory compounds and have been shown to reduce inflammation in animal studies. They may also have anti-tumor properties, although more human research is needed to confirm these potential benefits.
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Frequently asked questions
Oyster mushrooms are packed with nutrients like fibre, vitamins, minerals and antioxidants. They are also low in carbohydrates and contain virtually no fat. Oyster mushrooms are also easy to grow and can be cultivated on a wide variety of substrates.
You can purchase an oyster mushroom growing kit, which will include everything you need to get started, including instructions. Alternatively, you can use the bucket technique, which involves growing oyster mushrooms in a 5-gallon bucket with a lid. You will need to drill holes in the bucket and use straw, wood chips, or coffee grounds as a substrate.
Oyster mushrooms require optimal temperature, humidity, and airflow. They also need indirect moisture and good airflow to prevent the mushrooms from having big stems and small caps.
Oyster mushrooms are fast-growing and can be ready for harvest just weeks after inoculation.
One potential issue is that the mushrooms may spore overnight, which can be a problem if you are allergic to the spores. It is also important to maintain optimal conditions to prevent the mushrooms from having big stems and small caps.

























