If you want great mushrooms, location matters more than almost anything else.
After supporting thousands of home growers across New Zealand, we’ve found that choosing the right environment is the single biggest factor separating first-time success from disappointing harvests.
Mushrooms are highly responsive organisms. Unlike typical plants, they react quickly to changes in humidity, airflow, temperature, and light — meaning a poor location can stall growth, while a well-chosen one can produce dense, healthy flushes.
Unlike many guides written by hobby growers, this advice comes directly from our experience growing 100’s of tonnes of ouster mushrooms a year.
👉 Live in NZ and interested in growing oyster mushrooms, you can get some here!
Why Trust Our Advice?
At Mycobio, we don’t just write about mushrooms, we grow them commercially on our award-winning New Zealand farm.
Our cultivation systems have been recognised with the Electra Business Innovation Award for Environmental Sustainability and featured on TVNZ’s Country Calendar. More importantly, they’ve helped thousands of households successfully grow their own mushrooms.
Every recommendation below is grounded in real production experience — not theory.
Why Location Matters So Much
In commercial production rooms, even small environmental changes can influence yield, mushroom density, and overall crop health. The same principles apply at home.
The ideal growing space balances:
- Stable temperatures
- High humidity
- Gentle airflow
- Indirect light
- Protection from contaminants
When these conditions align, mushrooms thrive. When they don’t, growth slows — or stops entirely.
If you’re unsure how to manage moisture, our deeper guide explains it in detail:
👉 How to manage and maintain humidity
Start With Humidity, The Most Overlooked Factor
Before choosing a location, it helps to understand something many first-time growers don’t realise:
Mushrooms require very high humidity during their short active growing window — often just five days from pinning to harvest.
Because of this, the best spaces are those that can comfortably tolerate elevated moisture without creating problems inside your home.
Kitchens, bathrooms, and laundries often perform exceptionally well for this reason. These rooms are already designed to handle humidity, making them naturally compatible with mushroom cultivation.
Trying to force high humidity into dry living areas usually creates more work — and poorer results.
After supporting thousands of growers, we almost always recommend starting in a space where moisture already belongs.
Best Indoor Locations to Grow Mushrooms
For most people, indoor growing provides the greatest consistency and the highest likelihood of success.
BATHROOMS AND LAUNDRIES
Bathrooms frequently deliver excellent results because they naturally retain moisture.
Across thousands of customer setups — and in our own cultivation environments — spaces with higher ambient humidity consistently outperform dry rooms.
Best for:
- Oyster mushrooms
- Lion’s mane grow kits
- First-time growers
Just ensure there is some gentle airflow and avoid placing kits directly beside strong heat sources such as underfloor heating.
KITCHENS (LOW-TRAFFIC AREAS)
A quiet kitchen corner can work surprisingly well, provided it is not exposed to:
- Direct sunlight
- Oven heat
- Strong drafts
Avoid placing grow kits near ripening fruit, as fruit releases microbes and spores that can compete with healthy mushroom development.
SPARE ROOMS
Often overlooked, spare rooms provide one of the most controllable environments in the home.
They are ideal if you want predictable results without constantly adjusting conditions. Many experienced growers eventually migrate toward a dedicated growing space for this reason.
Consistency almost always beats convenience.
GARAGES AND UTILITY ROOMS
Garages tend to offer stable temperatures — something mushrooms love — but they can sometimes be dry.
If the air feels dry to you, it will almost certainly be dry for your mushrooms.
Increasing moisture or reviewing humidity strategies can dramatically improve performance:
👉 How to maintain and create humidity
Are Outdoor Locations Ideal?
While growing outdoors may sound appealing, it is generally less reliable than indoor growing, particularly for beginners.
Mushrooms prefer conditions similar to spring or autumn — moderate temperatures paired with steady humidity. Replicating that balance outdoors throughout the year is difficult in most parts of New Zealand.
Inside the home, ambient conditions tend to remain surprisingly stable across the seasons, which is why indoor growing typically produces more consistent harvests.
Outdoor environments also introduce variables that are largely avoidable indoors, including:
- Fungus gnats
- Competing spores
- Sudden temperature swings
- Wind exposure
- Rapid drying
For these reasons, we typically recommend outdoor placement only when a sheltered, shaded microclimate is available — and even then, indoor locations often outperform them.
A protected indoor space dramatically reduces pest pressure and environmental volatility.
Locations to Avoid
After years of commercial cultivation, we see the same problems repeatedly.
Avoid placing your mushrooms in:
- Bedrooms
- Direct sunlight
- Beside heat pumps or radiators
- Drafty hallways
- Dusty storage areas
- Sealed cupboards with no airflow
Still air encourages contamination — but strong airflow dries mushrooms out. Balance is key.
If growth ever appears stalled, this troubleshooting guide may help:
👉 Learn about the top two problems growing oyster mushrooms: Stalling & Dormancy
From Our Farm, Stability Isn’t Always Perfect
It may sound counterintuitive, but environments that are too stable can occasionally slow mushroom development.
In commercial production, we sometimes introduce small environmental changes — such as subtle temperature shifts or increased fresh air — to encourage mushrooms to progress through their growth cycle.
Home growers can apply the same principle.
If your kit appears stalled despite good moisture levels, try relocating it to a space with slightly different ambient conditions. Even minor changes can help trigger renewed growth.
Mushrooms are responsive organisms — sometimes they just need a signal.
Seasonal Tips for New Zealand Growers
One advantage of growing at home is the ability to adapt quickly as conditions change.
Winter
- Indoor locations typically outperform outdoor ones.
- Bathrooms and laundries often shine during colder months.
Summer
- Heat becomes the primary challenge.
- Seek cooler rooms or shaded areas away from afternoon sun.
Stable temperature is more important than chasing “perfect” numbers. Mushrooms prefer consistency over extremes.
👉 See our tips about growing mushrooms in winter
Tools That Can Improve Almost Any Location
You don’t need a commercial setup to create excellent growing conditions. Small adjustments often produce dramatic improvements.
Consider using:
- Hygrometers to monitor humidity
- Small humidifiers
- Spray bottles for micro-adjustments
- Indirect lighting
- Shelving to improve airflow
After producing mushrooms at scale, we’ve learned that growers who focus on environment first almost always succeed — regardless of species.
Do Mushrooms Grow in the Dark?
This is one of the most persistent myths in mushroom cultivation.
Mushrooms do not require darkness — but they also don’t want direct sunlight.
In nature, many gourmet species grow along forest floors where they receive soft, filtered light. That gentle light helps guide healthy formation without drying delicate tissue.
Complete darkness can actually lead to poor structure, while harsh sunlight quickly damages developing mushrooms.
Think bright shade, not darkness.
If the space is comfortable for you to spend time in, it is usually suitable for mushrooms.
👉 Learn more about the myth of mushrooms growing in the dark
Where is the best place in a house to grow mushrooms?
Bathrooms, spare rooms, and sheltered utility spaces typically provide the best balance of humidity and temperature.
See our guide about the best places to grow oyster mushrooms
Can I grow mushrooms outside?
Yes — but indoor environments are usually more consistent and easier to manage year-round. Outside also makes it susceptible to pests.
See our article about mushroom pests.
Is sunlight bad for mushrooms?
Direct sunlight is harmful, but soft indirect light supports healthy growth. Interestingly mushrooms will develop more vit. D if exposed to UV!
See our article about the myth of mushrooms growing in the dark
Do mushrooms need airflow?
Yes, mushrooms need fresh airflow, but airflow also dries the environment. The key is balancing gentle air exchange with consistently high humidity. Too little airflow can encourage “leggy growth” (see the article about the stages of the mushroom grow), while too much will dry developing mushrooms and stall growth. A simple rule of thumb: if mushrooms are growing in a spot that would easily dry laundry, it’s usually too dry for good results.
In summary
Choosing the right location is one of the simplest ways to improve your chances of a strong, healthy harvest. When humidity, airflow, temperature, and light are working together, mushrooms typically grow quickly and predictably — even for first-time growers.
If you’re ready to apply these principles, starting with a well-designed grow kit removes much of the environmental guesswork and allows you to focus on the growing experience itself. You can explore our guide to 👉 the best mushroom grow kits in New Zealand, or continue building your cultivation knowledge with our practical resources on humidity, growth stages, and troubleshooting common issues.
