Almond Mushroom
Agaricus Subrufescens
Agaricus subrufescens, commonly known as Almond Mushroom, is prized for its unique flavor and culinary uses. Native to subtropical regions, it thrives in moist, nutrient-rich substrates, making it a favorite among mushroom cultivators.
Everything it needs
9 essentials at a glance
Watering
Agaricus subrufescens prefers moist but not soggy conditions.
Water the substrate thoroughly when the top inch feels dry, typically every 3-5 days. In warmer months, increase frequency to maintain moisture. Signs of over-watering include a foul smell and slimy texture, while under-watering may cause the mushrooms to dry out and become brittle.
Light
This mushroom thrives in indirect light, preferring partial shade.
Ideal placement includes a location with 12-14 hours of filtered light daily, avoiding direct sunlight which can dry out the substrate. It tolerates low light but will not fruit as abundantly.
Soil
Agaricus subrufescens grows best in a well-draining substrate rich in organic matter, such as a mix of straw, sawdust, and compost.
The ideal pH range is between 6.0 and 7.0. Ensure good drainage to prevent waterlogging, which can lead to rot.
Humidity
Humidity levels should be maintained between 85-90%.
To increase humidity, mist the growing area or use a humidity dome. Signs of humidity stress include dry caps and stunted growth, while excessive humidity can lead to mold.
Temperature
The ideal temperature range for Agaricus subrufescens is between 60-75°F (15-24°C).
It is hardy in USDA zones 5-9. This mushroom can tolerate brief temperature fluctuations but prefers consistent conditions for optimal growth.
Fertilizing
Use a balanced organic fertilizer with an NPK ratio of 5-10-5.
Fertilize every 4-6 weeks during the growing season. Signs of nutrient deficiency include poor growth and pale caps, indicating a need for more nutrients.
Pruning
Pruning is not typically necessary for Agaricus subrufescens.
However, remove any dead or decaying material from the substrate to prevent contamination. If overcrowding occurs, thin out excess growth to improve air circulation.
Repotting
Repotting is not applicable for mushrooms as they grow in a substrate.
However, if the substrate becomes exhausted (after several flushes), replace it with fresh material. Signs of exhaustion include reduced fruiting and smaller caps.
Propagation
Propagation can be achieved through spore inoculation or mycelium transfer.
For spore inoculation, prepare a sterile substrate, inoculate with spores, and incubate at 70°F (21°C) until mycelium colonizes. Best timing is in spring or fall when temperatures are moderate.
When it's unhappy
Mold growth
Why it happens
Excess humidity and poor air circulation.
How to fix it
Reduce humidity and improve ventilation. Remove affected areas and ensure proper spacing between mushrooms.
Dry caps
Why it happens
Low humidity levels.
How to fix it
Increase humidity by misting the area or using a humidity dome. Monitor moisture levels regularly.
Poor fruiting
Why it happens
Nutrient deficiencies or unsuitable temperature.
How to fix it
Ensure adequate fertilization and maintain temperatures within the ideal range for optimal fruiting.
Yellowing mycelium
Why it happens
Over-watering or nutrient imbalance.
How to fix it
Adjust watering frequency and check nutrient levels in the substrate.
Stunted growth
Why it happens
Insufficient light or overcrowding.
How to fix it
Provide adequate light and thin out excess growth to allow for better air circulation.
Care through the year
Spring
In spring, prepare your substrate and inoculate with spores or mycelium. Ensure temperatures are stable and humidity levels are high to promote growth.
Summer
During summer, monitor humidity closely as temperatures rise. Increase watering frequency if needed and provide shade to prevent overheating.
Fall
In fall, continue to maintain humidity and temperature. This is an excellent time for harvesting as mushrooms will be at their peak.
Winter
In winter, ensure your growing area is insulated from cold drafts. Maintain consistent humidity and temperature to prevent stunted growth.
Toxicity & Safety
Agaricus subrufescens is non-toxic and safe for consumption. However, ensure proper identification as some look-alikes may be toxic. Symptoms of ingestion of toxic look-alikes can include nausea and gastrointestinal distress.
Good to know
How often should I water my Agaricus subrufescens?
Water your Agaricus subrufescens every 3-5 days, ensuring the top inch of the substrate is dry before watering again. Adjust frequency based on temperature and humidity.
What is the ideal temperature for growing Almond Mushrooms?
Agaricus subrufescens thrives at temperatures between 60-75°F (15-24°C). Maintaining consistent temperatures within this range promotes healthy growth.
Can I grow Agaricus subrufescens indoors?
Yes, Agaricus subrufescens can be successfully grown indoors as long as you provide adequate light, humidity, and temperature control. A suitable growing area is essential.
What should I do if my mushrooms are not fruiting?
If your Agaricus subrufescens is not fruiting, check for nutrient deficiencies, ensure proper humidity levels, and maintain temperatures within the ideal range to encourage growth.
Is Agaricus subrufescens safe to eat?
Yes, Agaricus subrufescens is safe for consumption and is known for its almond-like flavor. Ensure proper identification to avoid toxic look-alikes.
How can I increase humidity for my mushrooms?
To increase humidity for Agaricus subrufescens, mist the growing area regularly or use a humidity dome to create a more favorable environment for growth.
What is the best substrate for Agaricus subrufescens?
Agaricus subrufescens grows best in a substrate rich in organic matter, such as a mix of straw, sawdust, and compost, ensuring good drainage and moisture retention.
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